1920 U.S. Census, federal, pop. sch., Milwaukee, Milwaukee Co., Wisconsin, ED 157, Sheet 19A, h.241 f.363, Mathias Troka.
1930 US Census, federal, pop. sch., Milwaukee, Milwaukee Co., Wisconsin, ED 40-154, Sheet 4B, h.40 f.50, Mathias Troka.
PTG Pomorskie Towarzystwo Genealogiczne, "Pomeranian Baptism Indexes," database, PTG Pomorskie Towarzystwo Genealogiczne (http://www.ptg.gda.pl/ : accessed 14 February 2012), Picture 0148; Number 29; Pelplin Diocese Archive, Book W849, Lipusz Baptisms 1860-1880.
Obituary, Mathew Troka, The Milwaukee Journal-Sentinel, Milwaukee, Wisconsin, 28 December 1958.
National Archives and Records Administration, "World War I Draft Registration Cards, 1917-1918," digital image, Ancestry.com, Ancestry.com (http://www.ancestry.com/ : accessed 21 March 2011), Matthias Michael Troka; citing Draft Card T, #160.
Wisconsin, Wisconsin-EASy, Marriages, 1836-1930, 1894: Batch M01482-4, Source 1013993, Ref 3456, Mathias Troka, 22 October 1895;Family History Library, familysearch.org.
St. Hedwig's (Milwaukee, Wisconsin), Baptisms, Marriages, and Deaths, , Oct 1895, Maciej Troka & Giertruda Knyter; FHL microfilm FHL US/CAN Film #1863573.
It may be possible to confirm family relationships with Mathias 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 DNA with Mathias: