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..
Step-great-granddaughter
Tun Dr. Mahathir's granddaughter is named Shaista Mayada Sosrowardoyo
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 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).
Your brothers great granddaughter is your great great niece.
granddaughter
Your brothers granddaughter is your grandniece.
Yes, you would be the step-nan (or step-grandmother) to your granddaughter's step-brothers.
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.