+---Ralph Polkinghorne (02 JUL 1697-)
| | +---James Harrye (-ABT 1598)
| | +---Bennett Harry alias Angarrack (ABT 1568-ABT 1624)
| | | +---Alson ? 
(-ABT 1606)
| | +---John Harry alias Angarrack (ABT 1591-ABT 1668)
| | | +---Chesten Whita (-ABT 1652)
| | +---Richard Harry of Angarrack (ABT 1621-ABT 1686)
| | | | +---William Michell
| | | +---Elizabeth Michell (-ABT 1626)
| +---Mary Harry (1660-ABT 1733)
| | +---Richard Wills (-ABT 1631)
| +---Emblem Wills
| | +---James Harrye (-ABT 1598)
| | +---Bennett Harry alias Angarrack (ABT 1568-ABT 1624)
| | | +---Alson ? (-ABT 1606)
| +---Alson Harry (ABT 1601-)
| +---Chesten Whita (-ABT 1652)
+---Ralph Polkinghorne (ABT 1728-)
| +---Elizabeth Richards
+---Asdrueal Polkinghorne (05 JUL 1767-)
| +---Christian Rodda
+---William Polkinghorne (ABT 1802-)
| | +---William Bartle
| +---Elizabeth Bartle (ABT 1769-)
| +---Sidwell Abraham
+---James Polkinghorne (03 MAY 1833-23 OCT 1906)
| | +---Richard Edwards (ABT 1660-)
| | +---Nicholas Edwards (ABT 1735-SEP 1788)
| | | +---Grace Richards (09 AUG 1697-AUG 1758)
| | +---Nicholas Edwards (ABT 1769-)
| | | +---Honour Moon (1743-)
| +---Honour Edwards (27 MAY 1804-)
| +---Margaret Langon
+---Edward Thomas Polkinghorne (14 SEP 1866-17 DEC 1930)
| | +---Moses Thomas (ABT 1753-APR 1819)
| | +---Edward Thomas (30 DEC 1799-)
| | | +---Mary Berryman
| +---Christiana Thomas (07 DEC 1834-09 OCT 1919)
| +---Elizabeth Harvey
Keith Polkinghorne (1900-21 DEC 1901)
| +---Edmund Kessell
| +---Richard Henry Kessell (ABT 1804-)
| | +---Ann ?
| +---Richard Henry Kessell (13 MAR 1836-)
| | +---Margaret Nankervis
+---Mary Jane Kessell (08 FEB 1873-26 APR 1945)
+---Mary Ann Harris (ABT 1836-18 SEP 1921)