Step-great-granddaughter
Your grandfather's brother is your great uncle. Your great uncle's daughter's daughter (his granddaughter) is your second cousin.
If you really need a relationship term, use granddaughter-in-law. Most people would merely say "my grandson's wife."
Your brother's granddaughter is your great niece and you are her great uncle if you are a man, or her great aunt if you are a woman..
Your sister's granddaughter is your great niece and you are her great aunt (if you are a woman) or great uncle (if you are a man).
granddaughter
You would be 2nd cousins, assuming that the brother's wife's granddaughter is also the brother's granddaughter. If the granddaughter is not the granddaughter of the brother, there is no relationship.
The word "granddaughter" is one word. Otherwise, it is praising a daughter.
Elvis does not have a granddaughter .
Your granddaughter is your sister's great niece. Your sister is your granddaughter's great aunt.
No. Granddaughter is a noun. Except for the possessive form (granddaughter's) there is no adjective as there is for daughter (daughterly).
You granddaughter is a great great niece of your aunt. Your aunt is your granddaughter's great great aunt.
The half-sister of your granddaughter's half-sister is your granddaughter, or is not related to you.
Your granddaughter could be your son's daughter, or your son's niece.
My granddaughter is turning six years old next month.
Does Nadia Comaneci have a granddaughter
Granddaughter in Polish is "wnuczka."