James Boswell's uncle John was a member of a sect known as the Glasites.
Elizabeth Diana Bosville - Lady Macdonald of Sleat
Elizabeth Diana BosvilleBorn Jul 25, 1748
Died Oct 18, 1789 at Great George Street, London
It is unclear when Boswell first met Elizabeth Bosville. He was introduced to some of her family, at least her brother William, in 1763. In a letter to William Temple dated May 17, 1766 he wrote that "Miss Bosville is a charming young lady. I got her to speak a good deal before I left London and found her extremely sensible. She never dances. That I should have insisited, for no man shall ever pull about my wife. She loves reading and walking, and does not tire of six months in the country. [...] I dined three or four times a week at her father's while I stayed in London." 1
He seriously considered marrying her for some time before, eventually, she married one of his acquaintances, Alexander Macdonald of Sleat.