Nothing. Your not the one who married into the family your sister is so you would call them your sisters in
The mother's sister's brother is also the mother's brother. If it is an aunt to a brother or sister, it is an aunt to you as well.
You not blood related.
But however you may think of her as other Aunt if you wish to.
your great-great grandfather
Yes, your Dad's sister is your Aunt.
Ur aunt sister in law could be ur aunt or aunty in law once remove
Princess catherine (sister-inlaw)
Princess catherine (sister-inlaw)
Princess catherine (sister-inlaw)
She's not available.
1980
Sister-in-law = Belle-soeur
Since your mother and her sister have thesame aunts and uncles, your mother's sister's aunt is your grand aunt or, as some sat, your great aunt.
the daughter's cousin
no
It depends on the laws where you live (and if the husband had a will). You need to see a lawyer to find out the answer for sure.
your nan's sister is one of your parent's aunts. therefore, she's your great aunt x
Your brother or sister are your siblings. Your cousins are the children of your aunts and uncles.