Charlotte Simpson Mercer1 
From 30 June 1817, her married name became Lockhart.1
Children of Charlotte Simpson Mercer and Robert Lockhart of Castle Hill
- William Mercer Lockhart2 b. 1818, d. 3 Sep 1850
- Maj.-Gen. Sir Graeme Sinclair-Lockhart of Castle Hill, 10th Bt.2 b. 23 Jan 1820, d. 20 Mar 1904
- George Duncan Lockhart+1 b. 1821
William Mercer Lockhart1 
- [S37] BP2003 volume 3, page 3632. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S4567] Bill Norton, “re: Pitman Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2010 and 19 April 2011. Hereinafter cited as “re: Pitman Family.”
Maj.-Gen. Sir Graeme Sinclair-Lockhart of Castle Hill, 10th Bt.1 
He fought in the Persian Campaign.1 He gained the rank of Colonel in the 78th Regiment.1 He fought in the Indian Mutiny.1 He succeeded as the 10th Baronet Sinclair [N.S., 1636] on 5 May 1899.1 He was appointed Companion, Order of the Bath (C.B.)1 He held the office of Deputy Lieutenant (D.L.)1 He held the office of Justice of the Peace (J.P.)1
James Brebner1
Child of James Brebner
- Emily Udny Brebner2 d. 18 Jun 1904
Emily Udny Brebner1 
She was a practising Advocate.1 From 1861, her married name became Sinclair-Lockhart.
Sir Robert Duncan Sinclair-Lockhart of Castle Hill, 11th Bt.1 
He succeeded as the 11th Baronet Sinclair [N.S., 1636] on 20 March 1904.1
Children of Sir Robert Duncan Sinclair-Lockhart of Castle Hill, 11th Bt. and Flora Louisa Jane Beresford Nation Power
- Sir Graeme Duncan Power Sinclair-Lockhart of Castle Hill, 12th Bt.2 b. 29 Jan 1897, d. 15 Feb 1959
- Elizabeth Sinclair Sinclair-Lockhart+2 b. 26 Feb 1903
- Sir John Beresford Sinclair-Lockhart of Castle Hill, 13th Bt.2 b. 4 Nov 1904, d. 11 Mar 1970
- Sir Muir Edward Sinclair-Lockhart of Castle Hill, 14th Bt.+2 b. 23 Jul 1906, d. 1985
- Robert Nation Sinclair-Lockhart2 b. 3 Mar 1909, d. 1944
- Bruce Sinclair-Lockhart+2 b. 20 Feb 1910, d. 14 Nov 1965
Dr. unknown Thomas1
Child of Dr. unknown Thomas
Elizabeth Amanda Thomas1
Her married name became Lockhart.
Children of Elizabeth Amanda Thomas and George Duncan Lockhart
- Charlotte Elizabeth Mercer Lockhart2 d. 19 Jan 1884
- Sir Robert Duncan Sinclair-Lockhart of Castle Hill, 11th Bt.+2 b. 12 Nov 1859, d. 7 Nov 1918
Maj.-Gen. Sir Newton James Moore1 
He held the office of Premier of Western Australia.1 He held the office of Member of Parliament (M.P.) between 1918 and 1932.1
Child of Maj.-Gen. Sir Newton James Moore and Isabella Lowrie
- General Sir James Newton Rodney Moore1 b. 1905, d. 1985
- [S4567] Bill Norton, “re: Pitman Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2010 and 19 April 2011. Hereinafter cited as “re: Pitman Family.”
Charlotte Elizabeth Mercer Lockhart1 
From 14 March 1883, her married name became Richardson.
