The term "great niece" or "grand niece" is a parallel construction from the more common terms "granddaughter" and "great granddaughter."
In some parts of the English-speaking world the term for the children of your niece is great nephew and great niece. In other parts of the English-speaking world they say grand nephew and grand niece. Either form is "acceptable" somewhere. Use the form you feel comfortable with. If you find many people around you are using the other form, whichever that may be, and you want to "fit in" feel free to use the other form, or not, as you prefer.
There is no difference between "grandniece" and great niece." Some people prefer to use "grand" but others prefer to use "great" when talking about the granddaughter of one of their siblings.
The English language does not have a recognized term for the husband of a niece. Most often, when talking about him you would say, "my niece's husband" or " my sister's (or brother's) son-in-law."
"Grand-" is nothing more than an alternate or slang term for great. "Great-" is the proper prefix for distant family.I think in this case Great Aunt sounds betterwhere grandparents is better, Great parents don't really describe your parents parents!and when going even more generations back then your parents parents, it common to use both, My great great great great grand pappy...We use Great Aunt with our children "Great Aunt Cathy".
either your niece's husband, or your nephew, or your nephew in law, etc
My bother/ sisters child. or my friends niece. it was her niece. I you don't have a niece just never say the words I have a niece.
Your grandfather's niece is the first cousin to one of your parents. That would make you first cousins once removed. Most families just use the term cousin.
Since nephews are male, use of the word "Miss" in any form is inappropriate. It is not usual to use either "Mr" or "Miss" in connection with these relationship names. It is appropriate to say or write, "My nephew is named Bob" or "My niece is named Maria." If you want to address them in a letter, it is usual to use their first name without the relationship. So you would not write "Dear Nephew Bob", but you might write "Dear Maria." It is not uncommon for a niece or nephew to use the term Aunt or uncle in addressing you, however. So a niece might write to her uncle as "Dear Uncle Joe."
Uncle bob looked after his niece's rabbit when she went on holiday.
A niece is the daughter of your brother or sister and therefore has at least one grandparent who is also your ancestor. Sharing an ancestor, you are blood relatives - to the extent that term has any real meaning. (Remember, we share DNA, not blood, with our relatives.) However, if the niece, or her parent, was adopted, she is still a niece but shares no genetics with you and so would not be considered a "blood relative" by those who use that term.
She is never referred to be name simply as Scrooges Niece, Fred's wife of when spoken of by Fred he will use the term "Darling"
No because she will not be able to use it as well. she still will be able to use it but with great difficulty.