- Partnership with: Janet BROWN
- Child: James SINCLAIR Birth: 26 NOV 1738, Blackford, Perth, Scotland
- Child: William SINCLAIR Birth: 18 JAN 1741, Blackford, Perth, Scotland
- Child: Janet SINCLAIR Birth: 06 MAR 1743, Blackford, Perth, Scotland
- Child: Lillias ST. CLAIR Birth: 22 SEP 1745, Blackford, Perth, Scotland
- Child: Margaret SINCLAIR Birth: 02 FEB 1749, Blackford, Perth, Scotland
Descendants of James SINCLAIR
1 James SINCLAIR
=Janet BROWN
2 James SINCLAIR
2 William SINCLAIR
2 Janet SINCLAIR
2 Lillias ST. CLAIR
=William LAWSON Marriage: 08 MAR 1771, Blackford, Perth, Scotland
3 Janet LAWSON
=James MELICE Marriage: 28 DEC 1794, Blackford, Perth, Scotland
3 David LAWSON
=Sarah COMRIE Marriage: 16 NOV 1794, Blackford, Perth, Scotland
4 William LAWSON
4 John LAWSON
=Janet STIRLING
4 David LAWSON
4 Peter LAWSON
=Margaret STIRLING Marriage: 17 DEC 1826, Blackford, Perth, Scotland
4 Sarah LAWSON
=Peter STIRLING Marriage: 16 FEB 1840, Blackford, Perth, Scotland
3 William LAWSON
3 Luisa Nairn LAWSON
3 Graham E. LAWSON
=Annie WRIGHT
4 Margaret Graham LAWSON
=Davey LAWMAN
4 Annie LAWSON
=Andrew SCOTT Marriage: 20 DEC 1829, Fowlis Wester, Perth, Scotland
4 William Graham LAWSON
=Agnes AITKEN
4 Emily Amilia LAWSON
=John SCOTT
4 Lillian LAWSON
=Ronald MCDONALD
4 Mary LAWSON
=Robert MILLER
4 John LAWSON
=Mary Ann CLARK
4 Daniel LAWSON
=Elizabeth AITKEN Marriage: 12 JAN 1846, Selkirkshire, Scotland
4 Louisa LAWSON
=Abraham NEILSON Marriage: 14 NOV 1844, Gore Part Halton Haldimand Brant Waterloo Wentworth, Ontario, Canada
4 Helen LAWSON
=William SHANK
3 Margaret LAWSON
3 John LAWSON
=Janet BROWN Marriage: 15 DEC 1811, Blackford, Perth, Scotland
4 Janet LAWSON
4 William LAWSON
3 Charles LAWSON
=Margaret MCLAREN Marriage: 13 JUL 1810, Edinburgh, Midlothian, Scotland
4 Janet LAWSON
=Thomas McLean RUSSELL Marriage: 26 JUL 1834, Dollar, Clackmannanshire, Scotland
4 William LAWSON
4 Agnes LAWSON
4 Margaret LAWSON
4 Lillias LAWSON
4 Daniel McLaurin LAWSON
4 Mary Louisa LAWSON
4 Joanna Mccrie LAWSON
4 Charles Graham LAWSON
2 Margaret SINCLAIR