Reverend William McCall1
Child of Reverend William McCall
- Joanna McCall+2 d. 26 Jan 1908
Joanna McCall1 
From 21 August 1855, her married name became McCowan.
Child of Joanna McCall and Hew McCowan
- Sir David McCowan, 1st Bt.+2 b. 8 Dec 1860, d. 15 May 1937
Sir David McCowan, 1st Bt.1 
He gained the rank of Major in the 8th Scottish Rifles.1 He was director of George Outram & Company and Burma Oils.1 He was admitted to the Royal Company of Archers.1 He was senior partner of William Euing & Company, marine insurance brokers.1 He was appointed Knight in 1928.1 He held the office of Justice of the Peace (J.P.) for Glasgow.1 He held the office of Deputy Lieutenant (D.L.) of Glasgow.1 He was created 1st Baronet McCowan, of Dalwhat, co. Dumfries [U.K.] on 26 June 1934.1
Children of Sir David McCowan, 1st Bt. and Gertrude Margaret Cargill
- Hew McCowan2 b. 13 Aug 1890, d. 28 Jun 1915
- Margaret Elizabeth McCowan2 b. 20 May 1894
- Sir David James Cargill McCowan, 2nd Bt.+2 b. 5 Jun 1897, d. 29 Aug 1965
David Sime Cargill1
Child of David Sime Cargill
- Gertrude Margaret Cargill+2 d. 2 Mar 1935
Gertrude Margaret Cargill1 
From 1 October 1889, her married name became McCowan. She was appointed Commander, Order of the British Empire (C.B.E.) in 1932.1
Children of Gertrude Margaret Cargill and Sir David McCowan, 1st Bt.
- Hew McCowan2 b. 13 Aug 1890, d. 28 Jun 1915
- Margaret Elizabeth McCowan2 b. 20 May 1894
- Sir David James Cargill McCowan, 2nd Bt.+2 b. 5 Jun 1897, d. 29 Aug 1965
Hew McCowan1

He gained the rank of Lieutenant in the 8th Battalion, Scottish Rifles.1 He fought in the Gallipoli Campaign.1
Sir David James Cargill McCowan, 2nd Bt.1 
He succeeded as the 2nd Baronet McCowan, of Dalwhat, co. Dumfries [U.K., 1934] on 15 May 1937.1 He held the office of Deputy Lieutenant (D.L.) of Dunbartonshire between 1953 and 1961.1
Children of Sir David James Cargill McCowan, 2nd Bt. and Muriel Emma Annie Willmott
- Sir Hew Cargill McCowan, 3rd Bt.2 b. 26 Jul 1930, d. 1998
- Sir David William Cargill McCowan, 4th Bt.+2 b. 28 Feb 1934, d. Jun 2020
Margaret Elizabeth McCowan1 
From 24 November 1931, her married name became Bonnar.
Alexander Osborne Bonnar1
