+--Robert Jacob
+--Robert Ephram Jacob (6 Dec 1844-13 Nov 1912)
| +--Amy Liberman
+--Fredrick Leopold Jacob (5 Feb 1889-25 Jun 1962)
| | +--George Freiman
| +--Marie Freiman (5 Jun 1864-26 Mar 1941)
| +--Eva ?
+--Richard Fredrick Jacob (24 Jan 1925-)
| | +--Alexander Gross (-BEF 1921)
| +--Emma Marie Gross (27 Sep 1898-25 May 1976)
| +--Dorthea Leitke (-BEF 1921)
+--Richard Fred ,Jr Jacob (12 Aug 1955-)
| +--Roberta Josephine Johnson (24 Oct 1926-)
Nathan Andrew Jacob (12 Jul 1989-)
+--Denise Marie Wagner (15 May 1957-)