If your great uncle married into your family some of his nieces and nephews are your aunts or uncles (or your parent) and some are not related to you at all.
If your great uncle is the brother of one of your grandparents, his wife is your great aunt but their nephews and nieces onher side are not related to you. Those nieces and nephews (and their children the great nieces and great nephews) have no ancestor who is also one of yourancestors.
Jane Austen never married and had no children.
They are your nieces and nephews.
Yes, Pink has nieces and nephews. She has a brother, Jason Moore, who has children, making them her nieces and nephews. Additionally, Pink is known to be close with her family and often shares moments with them on social media.
if they are the children of your brother, they would be your nephews and nieces - if they were her children before she married your brother, then step-nephew and step-nieces
Nephews and/or Nieces
Nieces and nephews are the children of your siblings.
No. He had a brother patrick who married but had no children.
George Michael doesn't have any nieces or nephews because he didn't have any siblings. So, no need to send out any family reunion invites for the non-existent nieces and nephews of the late pop icon.
Harper Lee does not have any known nieces or nephews as she never married and had no children. She led a very private life and did not have any immediate family members.
They are your nieces and nephews and not your cousins
You are not related to all of your brother-in-law's family, but you are related to some of them. You are related to your brother-in-law. You are related to his wife, your sister. If he and your sister have children, you are related to them - they would be your nieces and nephews. But you are not related to your brother-in-law's siblings, cousins, parents, aunts, uncles, grandparents, etc.