The town he was born in was passed down as "Ober Trizenburg", which does not appear to exist. He is also reputed to have been a butcher.
Sources
Find a Grave, database and images (https://www.findagrave.com : accessed 08 June 2020), memorial page for Martin Kaiser (12 Nov 1839–8 Apr 1911), Find a Grave Memorial no. 115278984, citing Assumption Cemetery Old, Westport, Fairfield County, Connecticut, USA ; Maintained by Taquoshi (contributor 47282593) .
Information compiled by Loretta Kaiser Young, in John Worsley's possession in 2020.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9QV-NWS : accessed 8 June 2020), Martin Keyser, Westport township (east side), Fairfield, Connecticut, United States; citing enumeration district (ED) 112, sheet 3A, family 48, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,135.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MKKV-YHP : accessed 8 June 2020), Martin Keyser, Westport, Fairfield, Connecticut, United States; citing enumeration district (ED) ED 123, sheet 14A, family 295, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 127; FHL microfilm 1,374,140.
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