+---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 ?
Robert Clapp (ABT 1786-29 MAY 1807)
| +---William Horn
+---Jane Horn (ABT 1754-25 NOV 1810)
| +---Andrew Jeffery
+---Bridget Jeffery
| +---Richard Marker
+---Bridget Marker
+---Bridgett ?