William Maxwell Stewart
c.1874 Born son of William Stewart, coal master, and his wife Isabella nee Sinclair.
1891 Living in Old Kilpatrick, Dunbartonshire: William Stewart (age 50), coal merchant. With his wife Isabella Stewart (age 49), and their six children; Christina Stewart (age 26); Alexander Stewart (age 25), electrical engineer; Helen M. Stewart (age 22); Ida S. Stewart (age 20); William M. (age 17), apprentice electrical engineer; and Frederick C. Stewart (age 13).[1]
1900[2] /1908[3] With his 2 brothers, Frederick Charles Stewart and Alexander William Stewart, founded Thermotank
1901 Electrical engineer living with his mother and father in Old Kilpatrick, Dunbartonshire[4]
1926 William Maxwell Stewart died; of Lochbrae House, Bearsden, Dunbartonshire; executors Alexander William Stewart and Frederick Charles Stewart[5]
1940 Death of his son, William Alexander Frederick Stewart[6]