+--William PURVIS  (4 AUG 1689-)
   +--John PURVIS  (30 OCT 1715-)
   |  +--Isobell GILLY\GILLIE 
+--John PURVIS  (2 OCT 1745-22 MAY 1792)
|  +--Elizabeth MELVILL 
Eliza Anna PURVIS  (1781-5 FEB 1851)
|  +--James PRITCHARD  (ABT 1735-16 NOV 1780)
+--Eliza Ann PRITCHARD  (14 JUN 1757-BEF FEB 1813)
   +--Eleanor BULLOCH  (ABT 1735-AFT 26 AUG 1784)