Archibald Campbell Fraser of Lovat, (16 August 1736 – 8 December 1815) was British consul at Tripoli and Algiers, and later colonel of the 1st Inverness local militia. Upon the death of his brother, Simon Fraser (1726–1782), Archibald became the 20th MacShimidh (chief) of Clan Fraser of Lovat, and replaced his brother as Member of Parliament (M.P) for Inverness-shire.
Archibald Campbell Fraser was born the son of Simon Fraser, 11th Lord Lovat, by his third wife, Primrose Campbell. (She was sister of the man who would become 4th Duke of Argyll, chief of the Clan Campbell). Archibald himself was named after Lovat's early patron, the 1st Duke of Argyll. The marriage was a consequence of the long-standing bond between the chiefs of Clan Fraser and Clan Campbell.
There was a significant age difference between the couple, however. She was 23, he was 56 and had already been twice married. The marriage was not a happy one and in 1738 she left her husband to live in Edinburgh, leaving Archibald in his care.
He was at school at the village of Petty, where he was educated by the parish minister, when the Battle of Culloden occurred nearby. With some school companions, he watched the battle, where he saw Fraser clansmen in the front line. He also witnessed their decimation, with many of the 300 Frasers cut down.
His father, Lord Lovat, was subsequently tried for treason and beheaded in 1747. The title was attainted, and Archibald's half-brother Simon, Master of Lovat, was incarcerated in Edinburgh Castle for a year, although he received a full pardon in 1750. Archibald was sent to Glasgow for his education by his mother and he attended Glasgow University from 1750-1752.
His life in his early adult years is not well documented, and secondary sources attribute a variety of activities to him. One account suggests he adopted the name Fitzsimon and ‘distinguished himself in the sporting world’. It is also suggested he served in the Portuguese military. He may have also engaged in commerce.
What is documented is that he was granted a small sum of money paid annually from the attainted Lovat estate. Also, from 1764 to 1766 he was the British Consul in Tripoli, and from 1767 to 1776 the Consul in Algiers.