+---John Clapp (ABT 1717-)
| +---Elizabeth Crook 
+---Robert Clapp (ABT 1749-)
| | +---Michell Podger
| | +---Robert Poudger (ABT 1683-)
| +---Grace Podger (ABT 1717-)
| | +---George Hooke
| +---Grace Hooke (ABT 1688-)
| +---Dorothy ?
+---John Clapp (MAR 1781-)
| | +---William Horn
| +---Jane Horn (ABT 1754-25 NOV 1810)
| | +---Andrew Jeffery
| +---Bridget Jeffery
| | +---Richard Marker
| +---Bridget Marker
| +---Bridgett ?
Susan Clapp (ABT 1821-)
| +---James Irish
+---Mary Irish (ABT 1785-)
+---Mary ?