what i call my father elder brother's wife
Your wife's brother - would be your brother-in-law.
Your wife's brother is your brother-in-law.
There is no special name. Your father's brother's wife's brother is your uncle's brother-in-law.
Your half-brother...
Yes
would it be a brother in law? not sure about this one! Is it your husband/wifes daughters brother?
My wifes brother in law!
Well, you are the brother in law to your wife's brother. There is no real title for your brother to her brother, they can be considered extented family members, though.
thats her brothers wifes brother.....
You're wife's brother's wife is your sister-in-law.
You are not related as you do not share a common ancestor.
Hopefully your home.