Reginald Olsen
| +---John Morrison
| +---William Morrison (1841-27 AUG 1903)
| | +---Mary Ann Moore 
| +---Thomas Lamb Morrison (26 DEC 1861-01 JUN 1946)
| | | +---William Lamb (1668-)
| | | +---William Lamb (02 APR 1711-)
| | | | +---G Hunter
| | | +---James Lamb (10 DEC 1758-25 JUL 1853)
| | | | +---Christine Aitken
| | | +---Alexander Lamb (19 FEB 1782-1835)
| | | | +---Christina Hamilton
| | | +---Thomas Lamb
| | | | +---Catherine Thomson
| | +---Cathrine Lamb (1839-08 JAN 1904)
| | +---Hannah Henderson
+---Mary Lamb Morrison (1887-)
+---Margaret Robson