Charles I was born in Fife on 19 November 1600, the second son of James VI of Scotland (from 1603 also James I of England) and Anne of Denmark.
He became heir to the throne on the death of his brother, Prince Henry, in 1612. He succeeded, as the second Stuart King of Great Britain, in 1625.
Controversy and disputes dogged Charles throughout his reign. They eventually led to civil wars, first with the Scots from 1637, in Ireland from 1641, and then England (1642-46 and 1648). The wars deeply divided people at the time, and historians still disagree about the real causes of the conflict, but it is clear that Charles was not a successful ruler.
Charles was reserved (he had a residual stammer), self-righteous and had a high concept of royal authority, believing in the divine right of kings. He was a good linguist and a sensitive man of refined tastes.
He spent a lot on the arts, inviting the artists Van Dyck and Rubens to work in England, and buying a great collection of paintings by Raphael and Titian (this collection was later dispersed under Cromwell). Charles I also instituted the post of Master of the King's Music, involving supervision of the King's large band of musicians; the post survives today.
His expenditure on his court and his picture collection greatly increased the crown's debts. Indeed, crippling lack of money was a key problem for both the early Stuart monarchs.
Charles was also deeply religious. He favoured the high Anglican form of worship, with much ritual, while many of his subjects, particularly in Scotland, wanted plainer forms.
Charles found himself ever more in disagreement on religious and financial matters with many leading citizens. Having broken an engagement to the Spanish infanta, he had married a Roman Catholic, Henrietta Maria of France, and this only made matters worse.
Although Charles had promised Parliament in 1624 that there would be no advantages for recusants (people refusing to attend Church of England services), were he to marry a Roman Catholic bride, the French insisted on a commitment to remove all disabilities upon Roman Catholic subjects.
Charles's lack of scruple was shown by the fact that this commitment was secretly added to the marriage treaty, despite his promise to Parliament.
Charles had inherited disagreements with Parliament from his father, but his own actions, particularly engaging in ill-fated wars with France and Spain at the same time, eventually brought about a crisis in 1628-29.
Two expeditions to France failed - one of which had been led by The Duke of Buckingham, a royal favourite of both James I and Charles I, who had gained political influence and military power.
Such was the general dislike of Buckingham, that he was impeached by Parliament in 1628, although he was murdered by a fanatic before he could lead the second expedition to France.
The political controversy over Buckingham demonstrated that, although the monarch's right to choose his own Ministers was accepted as an essential part of the royal prerogative, Ministers had to be acceptable to Parliament or there would be repeated confrontations.
The King's chief opponent in Parliament until 1629 was Sir John Eliot, who was finally imprisoned in the Tower of London until his death in 1632.
Tensions between the King and Parliament centred around finances, made worse by the costs of war abroad, and by religious suspicions at home. Charles's marriage was seen as ominous, at a time when plots against Elizabeth I and the Gunpowder Plot in James I's reign were still fresh in the collective memory, and when the Protestant cause was going badly in the war in Europe.
In the first four years of his rule, Charles was faced with the alternative of either obtaining parliamentary funding and having his policies questioned by argumentative Parliaments who linked the issue of supply to remedying their grievances, or conducting a war without subsidies from Parliament.
Charles dismissed his fourth Parliament in March 1629 and decided to make do without either its advice or the taxes which it alone could grant legally.
Although opponents later called this period 'the Eleven Years' Tyranny', Charles's decision to rule without Parliament was technically within the King's royal prerogative, and the absence of a Parliament was less of a grievance to many people than the efforts to raise revenue by non-parliamentary means.
Charles's leading advisers, including William Laud, Archbishop of Canterbury, and the Earl of Strafford, were efficient but disliked.
For much of the 1630s, the King gained most of the income he needed from such measures as impositions, exploitation of forest laws, forced loans, wardship and, above all, ship money (extended in 1635 from ports to the whole country). These measures made him very unpopular, alienating many who were the natural supporters of the Crown.
Scotland, which Charles had left at the age of 3, returning only for his Scottish coronation in 1633, proved the catalyst for rebellion. Charles's attempt to impose a High Church liturgy and prayer book in Scotland had prompted a riot in 1637 in Edinburgh which escalated into general unrest.
Charles had to recall Parliament. However, the Short Parliament of April 1640 queried Charles's request for funds for war against the Scots and was dissolved within weeks.
The Scots occupied Newcastle and, under the treaty of Ripon, stayed in occupation of Northumberland and Durham and they were to be paid a subsidy until their grievances were redressed.
Charles was finally forced to call another Parliament in November 1640. This one, which came to be known as the Long Parliament, started with the imprisonment of Laud and Strafford (the latter was executed within six months, after a Bill of Attainder which did not allow for a defence), and the abolition of the King's Council (Star Chamber), and moved on to declare ship money and other fines illegal.
The King agreed that Parliament could not be dissolved without its own consent, and the Triennial Act of 1641 meant that no more than three years could elapse between Parliaments.
The Irish uprising of October 1641 raised tensions between the King and Parliament over the command of the Army. Parliament issued a Grand Remonstrance repeating their grievances, impeached 12 bishops and attempted to impeach The Queen.
Charles responded by entering the Commons in a failed attempt to arrest five Members of Parliament, who had fled before his arrival. Parliament reacted by passing a Militia Bill, allowing troops to be raised only under officers approved by Parliament.
Finally, on 22 August 1642 at Nottingham, Charles raised the Royal Standard calling for loyal subjects to support him. Oxford was to be the King's capital during the war. The Civil War, what Sir William Waller (a Parliamentary general and moderate) called 'this war without an enemy', had begun.
The Battle of Edgehill in October 1642 showed that early on the fighting was even. Broadly speaking, Charles retained the north, west and south-west of the country, and Parliament had London, East Anglia and the south-east, although there were pockets of resistance everywhere, ranging from solitary garrisons to whole cities.
However, the Navy sided with Parliament (which made it difficult for continental aid to reach the Royalists), and Charles lacked the resources to hire substantial mercenary help.
Parliament had entered an armed alliance with the predominant Scottish Presbyterian group under the Solemn League and Covenant of 1643, and from 1644 onwards Parliament's armies gained the upper hand - particularly with the improved training and discipline of the New Model Army.
The Self-Denying Ordinance was passed to exclude Members of Parliament from holding army commands, thereby getting rid of vacillating or incompetent earlier Parliamentary generals. Under strong generals like Sir Thomas Fairfax and Oliver Cromwell, Parliament won victories at Marston Moor (1644) and Naseby (1645).
The capture of the King's secret correspondence after Naseby showed the extent to which he had been seeking help from Ireland and from the Continent, which alienated many moderate supporters.
In May 1646, Charles placed himself in the hands of the Scottish Army (who handed him to the English Parliament after nine months in return for arrears of payment - the Scots had failed to win Charles's support for establishing Presbyterianism in England).
I go from a corruptible to an incorruptible Crown, where no disturbance can be
The final words of Charles I
Charles did not see his action as surrender, but as an opportunity to regain lost ground by playing one group off against another; he saw the monarchy as the source of stability and told parliamentary commanders 'you cannot be without me: you will fall to ruin if I do not sustain you'.
In Scotland and Ireland, factions were arguing, whilst in England there were signs of division in Parliament between the Presbyterians and the Independents, with alienation from the Army (in which radical doctrines such as that of the Levellers were threatening commanders' authority).
Charles's negotiations continued from his captivity at Carisbrooke Castle on the Isle of Wight (to which he had 'escaped' from Hampton Court in November 1647) and led to the Engagement with the Scots, under which the Scots would provide an army for Charles in exchange for the imposition of the Covenant on England.
This led to the second Civil War of 1648, which ended with Cromwell's victory at Preston in August.
The Army, concluding that permanent peace was impossible whilst Charles lived, decided that the King must be put on trial and executed. In December, Parliament was purged, leaving a small rump totally dependent on the Army, and the Rump Parliament established a High Court of Justice in the first week of January 1649.
On 20 January, Charles was charged with high treason 'against the realm of England'. Charles refused to plead, saying that he did not recognise the legality of the High Court: it had been established by a Commons purged of dissent, and without the House of Lords - nor had the Commons ever acted as a judicature.
The King was sentenced to death on 27 January. Three days later, Charles was beheaded on a scaffold outside the Banqueting House in Whitehall, London.
On the scaffold, he repeated his case:
I must tell you that the liberty and freedom [of the people] consists in having of Government, those laws by which their life and their goods may be most their own. It is not for having share in Government, Sir, that is nothing pertaining to them. A subject and a sovereign are clean different things. If I would have given way to an arbitrary way, for to have all laws changed according to the Power of the Sword, I needed not to have come here, and therefore I tell you ... that I am the martyr of the people
The King was buried on 9 February at Windsor, rather than Westminster Abbey, to avoid public disorder. To avoid the automatic succession of Charles I's son Charles, an Act was passed on 30 January forbidding the proclaiming of another monarch. On 7 February 1649, the office of King was formally abolished.
The Civil Wars were essentially confrontations between the monarchy and Parliament over the definitions of the powers of the monarchy and Parliament's authority.
These constitutional disagreements were made worse by religious animosities and financial disputes. Both sides claimed that they stood for the rule of law, yet civil war was by definition a matter of force.
Charles I, in his unwavering belief that he stood for constitutional and social stability, and the right of the people to enjoy the benefits of that stability, fatally weakened his position by failing to negotiate a compromise with Parliament and paid the price.
To many, Charles was seen as a martyr for his people and, to this day, wreaths of remembrance are laid by his supporters on the anniversary of his death at his statue, which faces down Whitehall to the site of his execution. After eleven years of Parliamentary rule (known as the Interregnum), Charles's son, Charles II was proclaimed King in 1660.