- Birth*: William McGregor was born on 12 November 1890 at Bonhill, Dunbartonshire, Scotland, .1
- He was the son of Robert McGregor and Ann Orkney.1
- Marriage*: William McGregor married Mary Watson Fyfe McGregor, daughter of Daniel McGregor and Mary Watson Fyfe, on Wednesday, 29 December 1920 at Bonhill, Dunbartonshire, Scotland, .1
- Death*: William McGregor died on 3 April 1957 at Vale of Leven, Dunbartonshire, Scotland, , at age 66.1
- [S40] From JR [May 2011].
Mother*: Ann Orkney1 b. 7 Aug 1858, d. 23 Feb 1943