James St Clair-Erskine, 2nd Earl of Rosslyn,, known as Sir James Erskine, Bt, between 1765 and 1789 and as Sir James St Clair-Erskine, Bt, between 1789 and 1805, was a Scottish soldier, politician, slave holder, and Acting Grand Master of the Grand Lodge of Scotland, on behalf of King George IV.

Alexander Wedderburn, 1st Earl of Rosslyn, PC, KC was a Scottish lawyer and politician who sat in the House of Commons between 1761 and 1780 when he was raised to the peerage as Baron Loughborough. He served as Lord High Chancellor of Great Britain from 1793 to 1801.