According to the table at http://freepages.genealogy.rootsweb.ancestry.com/~gentutor/chart.html
Your common ancestor is your Great grandparent (you are their Great grandchild - Row 3). Your Grandmother's niece/nephew is their brother/sisters child making them your Great grandparent's grandchild (column 2).
This makes you grandmother's niece/nephew your First Cousin once removed
Your grandmother's niece is your parent's first cousin and your first cousin, once removed. See link.
The 'first' part, the degree, indicates that the common ancestor you share with the niece in question is a grandparent, your grandmother's parent. Whichever connection to the common ancestor is shorter, that is the one you use. So even though the common ancestor is your great grandparent, you figure the kinship based on your cousin's connection: grandparent. The 'once removed' part means that the niece is in the same generation as your parents, if you block out the family tree. In terms of generations, you are one generation removed from (or one generation later than) this niece. This niece is your parent's first cousin, and children of the niece are your second cousins.
Confusing? Yes, it is. It takes getting used to.
If she's not your mother, that would make her your Aunt.
Your child and your niece are first cousins to each other. Your child and your niece's child are first cousins, once removed.
The child of your nephew is your great nephew (if a son) or your great niece (if a daughter).
Through marriage your step - sister's daughter is your step-niece!
Your nephew's daughter is your great niece and you are her great Aunt (or Great Uncle).Correction:Your nephew's daughter is your grand niece. You are her grand aunt or grand uncle.
What is my godfathers niece to me
Your niece's brother is your nephew.
Your son and your niece are first cousins.
For clarity, lets call your great great grandfather's niece "the niece". The relationship sequence: (1) The niece is the daughter of your great great grandfather's sibling (2) The niece is a 1st cousin of one of your great grandparents (3) The niece is a 1st cousin once removed of one of your grandparents (4) The niece is a 1st cousin twice removed of one of your parents (5) The niece is your 1st cousin three times removed
Nothing. Your niece in law. Your brother in laws niece.
cousins
your niece
There is no relation between you and your grandmother's cousin-in-law's grandson.
Your Aunt's niece is you (if you are female), your sister, or your First Cousin.
that would be your niece or if you want to be fussy then your niece in law!
Your brother's daughter is your niece. Her daughter is your great niece.
Niece