Same name in the family but nobody really knows

Me n my fiancé checked off all the names in our family that are taken n name we didn't agree on. About 1 month later I found out my second cousin named his son the Same but the kid is 6 years old 
I got disappointed when I heard but my aunt said to just name my son the same still 
Nobody really knows of the other kid anyway. They never really see or hear of him I guess their not close at all 
I still want our son to have that name!!
So does my fiancé do you think it's okay to still call my son they name that is taken