(ABT 1877-)
| +---James Symons 
(ABT 1830-)
+---Susan O Symons (ABT 1856-)
| +---Richard Luke
| +---Richard Luke (ABT 1630-)
| | +---Alice Michell
| +---Richard Luke (ABT 1669-MAY 1752)
| | | +---Teage Birley
| | +---Dorcas Birley (ABT 1628-)
| | +---Jane ?
| +---Richard Luke (ABT 1696-08 MAR 1770)
| | | +---Kullam Sampson
| | +---Margery Sampson (ABT 1670-)
| | +---Wilmot Mab
| +---Jacob Luke (ABT 1739-AUG 1783)
| | | +---John Matthews
| | +---Ann Matthews (ABT 1706-)
| +---Jacob Luke (ABT 1765-AUG 1834)
| | | +---James Buckett
| | +---Jane Buckett (ABT 1735-)
| | +---Elizabeth Vivian
| +---William Luke (ABT 1800-DEC 1875)
| | | +---Henry Cock (ABT 1537-ABT 1616)
| | | +---William Cock alias Connerwartha (ABT 1572-1645)
| | | | | +---Lawrence Rondall alias Tolsethen
| | | | +---Margery Rondall (-ABT 1623)
| | | +---Bennett Cock (ABT 1627-ABT 1701)
| | | | | +---Richard Hockin (-1591)
| | | | +---Mary Hockin (ABT 1586-ABT 1666)
| | | | +---Margaret ? (-ABT 1633)
| | | +---William Cock (ABT 1681-ABT 1762)
| | | | | +---John White
| | | | +---Jane White (-OCT 1721)
| | | | +---Elizabeth ? (-APR 1679)
| | | +---John Cock (ABT 1727-ABT 1796)
| | | | | +---Philip Trewartha (-ABT 1624)
| | | | | +---John Trewartha (ABT 1598-1687)
| | | | | | | +---Henry Cock (ABT 1537-ABT 1616)
| | | | | | +---Agnes Cock (ABT 1564-)
| | | | | | | +---Lawrence Rondall alias Tolsethen
| | | | | | +---Margery Rondall (-ABT 1623)
| | | | | +---Philip Andrewartha (ABT 1642-MAY 1705)
| | | | | | | +---John Carthew
| | | | | | +---Mary Carthew (ABT 1609-MAR 1671)
| | | | | | | +---Robert Jenken (-ABT 1569)
| | | | | | | +---Richard Roberts alias Trevernan alias Jenken (-ABT 1624)
| | | | | | | | +---Jennet ? (-ABT 1588)
| | | | | | +---Eleanor Roberts (ABT 1567-ABT 1655)
| | | | | | | +---John Tremeryn
| | | | | | +---Johan or Jane Tremeryn (-ABT 1603)
| | | | | | +---Jennet ? (-ABT 1588)
| | | | +---Alice Andrewartha (ABT 1693-ABT 1769)
| | | | | +---Henry Cock (ABT 1537-ABT 1616)
| | | | | +---William Cock alias Connerwartha (ABT 1572-1645)
| | | | | | | +---Lawrence Rondall alias Tolsethen
| | | | | | +---Margery Rondall (-ABT 1623)
| | | | | +---Henry Cock (ABT 1604-ABT 1659)
| | | | | | | +---James Edwards
| | | | | | +---Alice Edwards (-ABT 1614)
| | | | +---Mary Cock (ABT 1656-MAY 1720)
| | | | | +---Edwards Williams
| | | | +---Cheston Williams (-ABT 1665)
| | | | +---Agnes Jenkin
| | +---Jane Cock (ABT 1766-)
| | +---Elizabeth Williams
+---Mary Jane Luke (ABT 1835-)
| +---William Chinn (ABT 1769-)
+---Elizabeth Chinn (ABT 1800-)
| +---Richard Thomas
| +---Richard Thomas (ABT 1736-)
| | | +---Philip Trewartha (-ABT 1624)
| | | +---John Trewartha (ABT 1598-1687)
| | | | | +---Henry Cock (ABT 1537-ABT 1616)
| | | | +---Agnes Cock (ABT 1564-)
| | | | | +---Lawrence Rondall alias Tolsethen
| | | | +---Margery Rondall (-ABT 1623)
| | | +---Philip Andrewartha (ABT 1642-MAY 1705)
| | | | | +---John Carthew
| | | | +---Mary Carthew (ABT 1609-MAR 1671)
| | | | | +---Robert Jenken (-ABT 1569)
| | | | | +---Richard Roberts alias Trevernan alias Jenken (-ABT 1624)
| | | | | | +---Jennet ? (-ABT 1588)
| | | | +---Eleanor Roberts (ABT 1567-ABT 1655)
| | | | | +---John Tremeryn
| | | | +---Johan or Jane Tremeryn (-ABT 1603)
| | | | +---Jennet ? (-ABT 1588)
| | | +---John Andrewartha (ABT 1680-ABT 1720)
| | | | | +---Henry Cock (ABT 1537-ABT 1616)
| | | | | +---William Cock alias Connerwartha (ABT 1572-1645)
| | | | | | | +---Lawrence Rondall alias Tolsethen
| | | | | | +---Margery Rondall (-ABT 1623)
| | | | | +---Henry Cock (ABT 1604-ABT 1659)
| | | | | | | +---James Edwards
| | | | | | +---Alice Edwards (-ABT 1614)
| | | | +---Mary Cock (ABT 1656-MAY 1720)
| | | | | +---Edwards Williams
| | | | +---Cheston Williams (-ABT 1665)
| | | | +---Agnes Jenkin
| | +---Mary Andrewartha (12 OCT 1705-07 MAR 1737)
| | +---Mary Whitfar (ABT 1684-ABT 1748)
+---Mary Thomas (ABT 1769-)
+---Grace Roberts (ABT 1736-)