No, the plural mina is for a group of nouns, rather than several singular nouns in succession. The phrase is really min farmor och min morfar, but you can leave the min out both times.
The plural mina is for a group of nouns, rather than several singular nouns in succession. The phrase is really min farmor och min morfar, but you can leave the min out both times.
I've found the first part identifies lineage while the second part identifies the position. So farmor=far + mor, far=father more=mother. So father's mother. For example.