Paternal and Maternal relationship are confirmed by a Gedmatch test match between Keith Mann Spencer Gedmatch WK5907141 and his sister Brenda Spencer Gedmatch FP8308880. Their most common ancestor is their parents Lorn Spencer and Jeanne Mann Estimated number of generations to MRCA = 1.2, based on sharing 2680.1 cM across 67 shared segments.
Keith Mann Spencer- I am currently researching all my German Ancestors who make me 66% Western European. This is a goal of mine, to research, study German History, learn the German language, and document all of my findings. I am currently researching My Ancestors, with these surnames. Maurer's from Koblenz Stadt, Rhineland-Pfalz, Prussia, Germany to Vanderbilt, Otsego County Michigan. Immigration in 1851. Quickel's from Brandau, Starkenburg, Hesse-Darmstadt, Germany to Lancaster County, Pennsylvania in 19 October 1736. More surnames, Britsch, Beilstein, Ross, Enders, Hubner, Schmid, Buhlers, Stumpf, Ruhl, Veit, Frickin, Schaeffer/Schaffer, Bellinger, Klock, Windecker, Walrath, Krauss, Nelles, Fuchs/Fox, Kuhn, Neitzert, Mattheus, Stroh, Deckmann, Heuser, Dorn, Bundtin, Silbernagel, Bender, Stuertzenecker, Sprecher/Spraker, Demuth, Schmitz, Mueller, Ecker, Rickert, Haus, Fisher, Grauel, and Seibel.
Pennsylvania German Society by Pennsylvania-German Society, Vol # 1, 
Pennsylvania-German Society by Pennsylvania-German Society, Vol # 3, 
I Have the Results of My Genetic Genealogy Test, Now What?
International Society of Genetic Genealogy Wiki
Haplogroup E3b1a2 as a Possible Indicator of Settlement in Roman Britain by Soldiers of Balkan Origin
Limitanei, meaning respectively "the soldiers in frontier districts" (from the Latin phrase limes, meaning a military district of a frontier province) or "the soldiers on the riverbank" (from the Rhine and Danube), were an important part of the late Roman and early Byzantine army after the reorganizations of the late 3rd and early 4th centuries.
New York State DNA, Including Colonial New Amsterdam, Links of Interest
It may be possible to confirm family relationships by comparing test results with Keith Mann or other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: