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|Offspring of Johann Straub and Barbara Straub (bef1765)|
|John Stroup (bef1775-1832)|| Mary Stehle (bef1775-1835)|
Grandson William Stroup was born in 1785, so his father John Stroup would have to be born prior to 1775 in order to become a father at a biological minimum age of 10. Similarly, Barbara would have to be at least born prior to 1765.
The more likely minimum age of fatherhood at 18 or older puts the more likely birth date as before 1767. Similarly, the more likely date for Barbara's birth would be before 1749.