1. Our father's mother is our grandmother
2. My mother's parents are my grandparents
3. His sister 's husband is his brother-in law
4. Their mother's brother is their uncle
5. Your brother's children are your nephews and nieces
6. Her husband's father is her father-in-law
7. My father's sister is my aunt
8. Their parents' nephews and nieces are their cousins
9. Our brother's wife is our sister-in-law
10. Your wife's mother is your mother-in law.
