Father
Your sister's son is your nephew His sons are your grandnephews, and his daughters are your grandnieces.
Your sister's son is your nephew His sons are your grandnephews, and his daughters are your grandnieces.
Real sister, half sister, or step sister
sister in law.
Your sister's sister is your sister.
The sons of your father's sister are your first cousins.
No relation whatsoever. You will be an aunt or uncle to your sister's child and your brother-in-law's sister will be the child's aunt, but that's as close as it gets.
Your mothers sister is your Aunt
his sons name was Peter Markham Scott, later Sir Peter Scott
There is no relation. Your not blood at all so your just really good friends.
you have nine children eight sons and one daughter each son has a sister
sister-in-law