Thorfinn lives in the 10th Century and is swedish. He goes a viking, not married and does not claim any offspring.
Thorfinn discovered he was a hunter while in his teens.
His parents were farmers.
As was custom for vikings to worship the god of Thunder "Thor"many vikings were named for their patron God but always had a prefix attached in regard to their place. Thor-Finn. Finn means "friend". So Thorfinn is named appropriately friend of Thor.