In 1663, James Crofts, the fourteen year old Duke of Monmouth, married Anne Scott, the twelve year old Countess of Buccleugh. He took his wife’s name and the earldom of Buccleugh was elevated to a dukedom by James’ father, Charles II. Due to extended uncertainties of the English Civil Wars, the pair did not actually maintain a joint household until 1671 but their first child, Charles, Earl of Doncaster, was born soon after their household was established.
When Charles II was executed in 1681, starting the Interregnum period, James was encouraged to take up the Royalist cause of uniting the three thrones under one authority as the heir presumptive. Using the name of James Fitzroy-Mortimer, he undertook a number of military expeditions through the Otherworld in order to both prove his Second Sight and to out-manoeuvre the Parliamentarian forces on a number of battlefields. Despite this, when an accord was reached and both sides agreed that a unified throne would serve the nations better than a personal union, James was passed over in favour of his cousin, William of Orange. As an illegitimate child, James had been free to follow the Catholic religion but the combined Parliaments of England and Scotland were wary of having an open Catholic on the throne. Thus, they invited the Protestant William to take the throne despite his lack of Sight.
James was stripped of his title as Duke of Monmouth under attainder in 1690, once the new Kingdom of Great Britain was established by treaty, but his wife retained the title of Duchess of Buccleugh, due to the title being granted to both of them. The title remains extent, despite continued unrest until the Acts of Union in 1700 that used James as a figurehead. The family returned to the name Scott to distance themselves from the continued conflict but are often referred to as the Scott-Mortimers of Selkirk or the Scottish Mortimers. All reports suggest that the Scottish Mortimers retain their Second Sight and many have had illustrious careers with the Rangers.