(ABT 1843-)
+---John Cowlin (19 FEB 1872-14 NOV 1930)
| +---Elizabeth ? 
(ABT 1846-)
+---Frederick John Cowlin (30 JUL 1903-17 DEC 1974)
| | +---John Ridge (ABT 1843-)
| +---Ada Alicia Ridge (ABT 1871-)
| +---Mary Jane Bicknell (ABT 1848-)
Joyce Cowlin
| +---Henry Christian Volmar
+---May Anneley Volmar (11 APR 1900-10 AUG 1934)