What is the relation between my mum's sisters daughter and her husband to me?
Cousin and cousin-in-law
What relation is your sisters daughter to you?
your sisters daughter would be your neice and you will be there uncle or aunt if you are a boy or girl
What is the relation between my husband to my sister-in-law's husband?
To prove a relationship to a first cousin you must know the parent through which that person is related to you, and how that parent is related to one of your parents. To prove a relationship to a s...
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Your relation to your sisters daughter?
You would be her Aunt or Uncle. The child would be your Niece.
A man shows his friend a woman sitting in a park and says that she is the daughter of my grandmother's only son What is the relation between the two?
The woman in the park is the man's sister, or his first cousin.