Dion John Grayham
| +---Ivan Leonard Pointon
+---Carol May Pointon 
| +---George Henry Thomas
| +---George Henry Jackson Thomas
| | | +---Thomas Jackson (08 JUL 1828-18 AUG 1907)
| | +---Louisa Jackson (16 JUN 1863-06 JUL 1928)
| | | +---William Judd (1802-15 JUL 1876)
| | +---Harriett Judd (06 JAN 1841-17 MAR 1918)
| | +---Ann Sayers or Sears (1810-23 APR 1870)
+---Laura May Thomas
+---Dorothy Voss Whale