Last updated 01/29/2010

Overview.  The goal of this page is to integrate what is known from traditional paper genealogy research with results from genetic research posted at this site (Patriarch and Y-results pages).

Whether or not you have a patriarch or Y-results posted at this site, you are encouraged to submit brief summaries and/or questions about you research or about topics already posted here to the project administrator .

Discussion topics:


a.      Renz of NJ (1/29/10, from C. Renz).  My own particular branch originated in Emmingen, a small village in Stadt (city) Nagold, and Landkreis (district) Calw. Emmingen is located in the northern part of the Black Forest, in the southwest portion of the state of Baden-Württemberg. There were at least two families who immigrated from there to New Jersey:

                            i.      Johannes Martin Renz (b.31 Jul 1839), son of Christian Renz and Magdalena Braun. He arrived on 3 Sep 1864, and on 11 Sep 1864 married Fredereka Haug in Newark (Essex), NJ. U.S. Census records list him as Martin Renz. He and his descendents, a number of whom are males, can be followed in these records through 1930.

Action Step: To compare Y-results of male descendents of this branch with those of Johann Michael Renz.

                          ii.      Johann Michael Renz. The brother of Johannes Martin, Johann Michael (b. 17 Jul 1832) had three sons:

    • Christian Gottleib (b. 15 Dec 1862)
    • Friedrich Wilhelm (24 Oct 1864)
    • Johann Michael (II) (b. 27 Dec 1867)

All three brothers settled in Hudson Co., NJ between 1888 and 1894. It seems that Christian and Friedrich died relatively young with no male offspring. Johann Michael and his wife, Catherine Sauer, had eight children who lived to adulthood, several producing male offspring, one of whom is my grandfather. It is unclear if there was any connection between these three brothers and their uncle in Newark. My relatives and I today have no connection with any of the descendents of Martin Renz.

b.     Renz of NY (1/29/10, from C. Renz).  There are a number of Renz/Rentz families that settled in NYC. I am following one particular family:

                            i.      George Renz (b. 18 Feb 1870/ d. 30 Mar 1960) married Regina Bauer on 26 Oct 1890 in Manhattan. Because the original record in the Manhattan Office of Vital Records is faded beyond recognition, it is not possible to determine the original village from which either person immigrated. George is clearly not from Emmingen. I have evidence to suggest that George may have been the son of Johann Georg Renz and Catherine Elisabeth Rilling; born in Gomaringen (or Hinterweiler), Kreis Schwarzwaldk, Württemberg, but have yet to confirm this hypothesis.

The occupation for George is listed in the U.S. Census records as a baker, the same occupation as my grandfather and his brother. In the 1900 U.S. Census, George and his family lived in Union Hill, NJ, the same town as my g-grandfather and his relatives. Thereafter, he is located in Manhattan, where he owned and operated a bakery. It is clear from both U.S. Census records and NYC directories that these three men all worked together in that bakery, located at 1st Avenue, between 1915-1920. Afterwards, my grandfather and his brother returned to NJ, while George Renz stayed in NY, eventually retiring to Richmond Hills, NY.

Action Step.  To compare Y-DNA results from this branch with those of Johann Michael Renz.


a.      Johann Georg Rentz of Colleton, SC (1/29/10, C. Renz).  There is some confusion about the relationship between this Rentz families from Colleton Co., SC and those of Georgia who purport a relationship to the Colleton branch. The confusion arises because Y-DNA results from these two groups do not match. In fact, these two groups have such a significant genetic difference that there is no possibility of a common ancestor.

Y-DNA Results. Furthermore, genetic genealogy results from a descendent of Johann Georg Rentz R-8) match at a level of 24/25 markers with the descendents of Johann Michael Renz (R-3). Confirmation of a common ancestor is strongly suggested in Ortssippenbuch Nagold 2 fur den Stadteil Emmingen, Kreis Calw (p. 74, nos. 766 and 768), where it is noted that the earliest progenitors of both these lines lived in Emmingen at the same time. The common haplotype for these two lines is R1a1(see the pedigrees for Jacob Rentz and Michael Rentz).

b.     John Alexander Rentz of Georgia (1/29/10, C. Renz).  Most of the descendents of John A. Rentz claim Johann Georg Rentz of Colleton, SC as a common ancestor. At issue here is the fact that Y-results from a male descendent of this branch(R-2) belongs to haplogroup of I1.

Problematic is the ambiguity of the two generations immediately following Johann Georg Rentz. It is known from the Ortssippenbuch (p. 80, n. 840) that Johann Georg (b. 24 Mar 1720) had the following children:

·         Hanß Jerg, b. 25 Mar 1745

·         Anna Catharina, b. 2 Nov 1746

·         Simon, b. 9 Jan 1749

Descendents for Simon and Johann Georg (presumably the same person as Hanß Jerg) can be verified by traditional paper genealogy. However, at the present time there is no known evidence to connect John Alexander Rentz to Johann Georg Rentz.

As a result of this ambiguity, the Pedigree Page lists the lineage for this branch only to Johann Georg, with a question as to the connection between John Alexander and Johann Georg Rentz.

Action Step.  To find documentation which either a) definitively connects John Alexander to Johann Georg Rentz; or b) to find both paper and genetic genalogical evidence which documents a different ancestor for John Alexander, who is also of the haplogroup I1.


a.      Adam George Renz of NYC.  Ancestry of this group is traced to Hans Renz of Dusslingen, Kreis Tübingen, Würtemberg. The haplotype is R1b1b2.

Action Step.  To confirm this haplogroup with other members of this line and/or other members from Kreis Tübingen.