William Tiefenback
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- 1 William Tiefenback [1]
- Helen Jeanette Zotz b. 24 Jul 1899
- 2 Helen Jeanette Tiefenback [1.1] b. 3 Dec 1917 d. 6 Feb 2005
- Peter Frank Gruden
- 3 Peter Frank Gruden [1.1.1] b. 23 Jul 1941 d. 18 Dec 2016
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- 4 Eric Jason Gruden [1.1.1.1] b. 8 Aug 1973 d. 3 Jun 1984
- 4 Eric Jason Gruden [1.1.1.1]
- 3 Gruden [1.1.2]
- 3 Peter Frank Gruden [1.1.1]
- 2 Helen Jeanette Tiefenback [1.1]