+———Thomas Clapp (1563 Istha, Hesse, Germany – 25 Nov 1624)                      |                  +———Geisa Clapp (1619 Istha, Hesse, Germany – )                  |   |                      |   +———Elizabeth Unknown                  |              +———Nikolaus Clapp (1644 Istha, Hesse, Germany – )              |   |                  |   +———Catharina Brylande              |          +———Johann Jost Clapp (1669 Istha, Hesse, Germany – 1716 Berks Co, PA)          |   |              |   +———Elizabeth Potter (1645 – )          |      +———George Valentine Clapp (24 May 1702 Weisenheim-Berg, Hesse, Germany – 12 Oct 1773 Guilford Co, NC)      |   |          |   +———Anna Margrete Unknown      |  +———George Tobias Clapp (18 Jan 1735 Oley, Berks Co, PA – )  |   |      |   +———Anna Barbara Stiess  |      Elizabeth Clapp (1765 Guilford Co, NC – )  |          |   +———Hans Phillip Gleiss  |   |  +———Anna Maria Glass (9 Dec 1742 – 9 Oct 1776)