Sarah Lewis 
(12 NOV 1947-)
| +---William Pearce (ABT 1829-)
| +---Walter Hubert Buckland Pearce (18 JUL 1865-13 AUG 1930)
| | +---Charlotte Coker (ABT 1833-)
| +---Buckland Gordon Pearce (19 MAY 1890-08 APR 1957)
| | | +---Edwin Bickerstaff Wesson (ABT 1791-12 APR 1827)
| | | +---Edwin Henry Bickerstaff Wesson (26 SEP 1820-18 MAR 1908)
| | | | +---Mary Ann Pengilly
| | +---Bessie Wesson (07 APR 1869-21 OCT 1954)
| | | +---William Polkinghorne (ABT 1801-)
| | +---Elizabeth Jane Polkinghorne (ABT 1827-09 JUL 1890)
| | +---Elizabeth Ould (ABT 1806-)
+---Gudrun Pamela Pearce (ABT 1922-18 JUL 1957)
+---Gudrun Sophia Olsen (-26 DEC 1979)