Definition :
A person who is related to another by birth rather than by marriage.
Relations
1
Grandfather’s son
»
Father or Uncle
2
Grandmother’s son
»
Father or Uncle
3
Grandfather’s only son
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Father
4
Grandmother’s only son
»
Father
5
Mother’s or father’s mother
»
Grandmother
6
Son’s wife
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Daughter-in-Law
7
Daughter’s husband
»
Son-in-Law
8
Husband’s or wife’s sister
»
Sister-in-Law
9
Brother’s son...
