I'm guessing it's supposed to be "the father in him", which is an informal way of saying "paternal instinct." You can do a web search for the phrase if you'd like to see example sentences.

"Father" here means "fatherliness". The sentence would be clearer like this: "The father within him arose at this sight."

This sentence might mean that the father and son lived in this area when the child was young. "Raising a child" is the parent supervising all matters of the child's life. The word "sight" should be "site".