Your daughter and your aunt's children are first cousins to each other.
Your daughter and your aunt's grandson are first cousins, once removed, to each other.
She's your daughter's cousin. Your Uncle's your daughter's uncle as well, so she's his niece. Which makes your/her Uncle's daughter, both of you guys' cousin.
First cousin once removed.
Incest
You are cousins
Father and daughter.
You are their aunt or aunt by marriage.
The offspring of your first cousin is your first cousin once removed.
The grandchildren of any of your great uncles and great aunts are your second cousins.
your uncles daughter would be your cousin
Your uncles daughter would be your cousin.
your uncles daughter would be your cousin
Your daughter's uncle can be your brother. Her parent who is not your sibling (your brother-in-law or sister-in-law) could also have brothers. They will also be your daughter's uncles, but will not be related to you.
Cousins
First answer:that would be your second cousin. It is legal in the united states to marry them due to genetics Second answer:Your question is: "What is the relationship of your uncles son daughter to you?" If you are asking, "What is the relationship of your uncle's son and daughter to you?" they are your first cousins.If you are asking, "What is the relationship of your uncle's son's daughter to you?" she is your first cousin once removed.
Your daughter's daughter is your granddaughter, and you would be her grandmother or grandfather.
She is your first cousin.
2nd cousin
Your brother's daughter's daughter is your great niece.
Your daughter is your brother's niece. Your brother is your daughter's uncle