+---Ian Harris
| | +---William John Clement (23 OCT 1858-16 JAN 1936)
| | +---William Nicolson Clement (10 MAR 1887-24 JUN 1969)
| | | | +---William Nicolson
| | | | +---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
| | | +---Ellen Thurston Grove Cowley Nicolson (27 DEC 1858-APR 1925)
| | | | +---William Cowley
| | | +---Ellen Cowley (26 SEP 1826-12 SEP 1913)
| +---Joan Ross Clement (09 MAR 1918-)
| +---Annie Ross
Scott Harris
+---Sheryl Courtney