Mavis Vera Blackwell 
| +---Thomas Jackson (08 JUL 1828-18 AUG 1907)
| +---William Jackson (22 JUL 1860-11 APR 1938)
| | | +---William Judd (1802-15 JUL 1876)
| | +---Harriett Judd (06 JAN 1841-17 MAR 1918)
| | +---Ann Sayers or Sears (1810-23 APR 1870)
+---Anne Vera Jackson
| +---Thomas Heard
| +---Thomas Heard (-26 JUN 1899)
+---Anne Maria Heard (08 JUL 1871-)
| +---Samuel Hind
+---Charlotte Hind (15 MAR 1852-NOV 1902)
+---Maria Morgan