Your son and your great nephew (brother's daughter's son) are first cousins, once removed (i.e there is one generation separating them in the family tree) .
If you have no siblings but your daughter has an uncle, he is the brother of your spouse, your brother-in-law.
No siblings of Hamilcar barca were metioned in the sources. The name of his wife is not known either. Only the names of one of his two daughters and of his thee sons and his son-in-law are known.
the son would be the nephew
He is your first cousin twice removed.
There is no genealogical relationship. He is just your son-in-law's brother.
your second nephew
Your son would be the uncle of his brother's son.
Your sister's son is your nephew His sons are your grandnephews, and his daughters are your grandnieces.
Second cousins once removed.
Your grandson is the great-nephew of your brother.
Your sister's son is your nephew His sons are your grandnephews, and his daughters are your grandnieces.
It says what relation are your brothers nieces to you.... It could be your child or your niece also causes you can have two brothers and it may be the other ones kids. Or of course it could be your brother's new wife kid by another man making her no relation.
your cousin
They would be cousins, once removed.
Great niece
Yes, because your daughters are sisters and since their husbands are your son in law's that would make them brother in laws.PS. I hope your daughters are veryhappy, congrats!! :) ,,Chameleon5,
If you have no siblings but your daughter has an uncle, he is the brother of your spouse, your brother-in-law.