Johannes Roos was born in Hunterdon, New Jersey (along with twin Elisabet) to Andries Roos and his wife, and was baptised at the First Reformed Church in Raritan on Oct 28, 1713.[1]
Back in 2017 I had added a link to a Family Search profile, though now that profile has been changed to represent an Ezekiel Rose (17 July 1705 – 9 August 1768).
Source: S-788117762 Repository: #R-1198667231 U.S., Sons of the American Revolution Membership Applications, 1889-1970 Ancestry.com Publication: Ancestry.com Operations, Inc.
Thomas, Lowell S. Johannis Rose. Mac/McPherson of PA, Ladd of Maine and Related Families (website). Rootsweb, Ancestry.com : accessed by J. Ricketts on 15 Aug 2016. No sources cited.
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DNA Connections
It may be possible to confirm family relationships with John by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share some percentage of DNA with John:
Though the WikiTree profile for Gerrit does not mention a son Andreas, though it has other children mentioned. So more research needed to see if Andreas Roos is a correct son of Gerrit Jansen Roosa.
WikiTree contributors, "Gerrit Janszen Roos (abt.1630-1698)," WikiTree: The Free Family Tree, (https://www.wikitree.com/wiki/Roos-11 : accessed 12 November 2022).
Which matches:
"Gerrit Jansen Roosa." Family Search. Accessed Nov. 12th, 2022. https://www.familysearch.org/tree/person/details/LH6M-51T.
Though the WikiTree profile for Gerrit does not mention a son Andreas, though it has other children mentioned. So more research needed to see if Andreas Roos is a correct son of Gerrit Jansen Roosa.