Hans Leonhard Fischer and Margaretha his wife (née unknown) were the parents of Maria Margaretha Fischer, who was born "in 1696 in Thürnhofen, Bavaria (at that time the village was known as Dürnhof)."
↑AKDHA: Andreas Killian biography (AKDHA: Andreas Killian Descendants Historical Association)
It may be possible to confirm family relationships with Hans 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 Hans: