+---John Nicolson
| +---Margaret Nicolson 
+---William Nicolson (01 OCT 1696-1781)
| +---Joanna Coke
+---Joseph Nicolson (20 AUG 1735-)
| +---Elizabeth Trosse
+---William Nicolson (30 JUL 1774-)
| +---Mary Dunsford
+---William Nicolson (14 AUG 1805-)
| +---Sarah Hewett
+---William (Patrick) Nicolson (10 FEB 1835-28 JUL 1898)
| | +---William Nicolson
| | +---John Nicolson
| | | +---Margaret Nicolson
| | +---William Nicolson (01 OCT 1696-1781)
| | | +---Joanna Coke
| | +---Joseph Nicolson (20 AUG 1735-)
| | | +---Elizabeth Trosse
| | +---Thomas Nicolson (01 JUL 1773-)
| | | +---Mary Dunsford
| +---Martha Nicolson (20 DEC 1803-)
| +---Esther Birt
Lilian Maud Thurston Grove Cowley Nicolson (11 FEB 1870-06 NOV 1941)
| +---William Cowley
+---Ellen Cowley (26 SEP 1826-12 SEP 1913)