He migrated to America as a young man with two of his brothers, originally settling in Westchester County, New York, near to present day New Rochelle.
Listed as militiaman Lenart Beyer in the company of Soffrines Deychert, during the French and Indian War, March 20-29, 1757. This company was raised in Stone Arabia, Mohawk Valley, New York. His son John was in the same company.
↑American Boyers, 7th ed., Donald Arthur Boyer, The Association of American Boyers, Inc., York, Pa., v. 4, 1998, Chapter 41, pg. 650.
"New York Births and Christenings, 1640-1962," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:V2HD-DHY : 12 December 2014), Joh. Leenhard Beijer in entry for Hans Beijer, 23 Feb 1735; citing LUTHERAN CHURCH,NEW YORK,NEW YORK,NEW YORK, reference ; FHL microfilm 974.7 B2N V. 97-103.
It may be possible to confirm family relationships with Leonard by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree:
Beyer-207 and Boyer-2828 are not ready to be merged because: Not at all sure these are the same person. Johannes Leonard's family ended up in the Mohawk valley. Don't know why he would end up in Pennsylvania. I wouldn't merge here without much better information. Both Johannes and Boyer were very common names.
Chapter II at http://www.threerivershms.com/namesfrindianwar.htm shows both a Lenart and John Beyer in Soffrines Deychert's company from Stone Arabia in French and Indian War in March 1757. Is it possible that Leonard lived past 1752? Or is this a son with same name?