Question: Who is the paternal grandfather of Charles Andrew Bruce?
Answer: William Bruce, 8th Earl of Kincardine

The "Prince of Wales Island Gazette Extra" of 21 March 1810 recorded the appointment and arrival of Charles Andrew Bruce as Governor and the appointment of Colonel Norman Macalister and William Edward Phillips as members of Council. Charles Bruce, 5th Earl of Elgin and 9th Earl of Kincardine (6 July 1732 – 14 May 1771) was the son of William Bruce, 8th Earl of Kincardine. His mother was Janet Roberton, daughter of James Roberton (principal Lord of Session) and great-granddaughter of advocate and