(1874-1961)
Frank Gregson Warne (1905-1997)
| +---George How (1768-1850)
| +---George How (1805-1887)
| | +---Elizabeth Rebdell 
(1767-1841)
| +---Samuel How (ABT 1831-1922)
| | | +---Samuel Esterbrook
| | +---Dianne Esterbrook (1803-1894)
| | +---Ann ?
+---Jessie Emily How (1869-1961)
+---Mary Ann Grigson (1832-1917)