Sure, he got a lead that saying his daughter have blonde hair and green eyes, but if he really want to be thorough he should also look for girls with brown hair and green eye...
Unpopular opinion, the grandpa being stubborn is just for comedic purposes, i find his character very enjoyable though ╮(￣▽￣)╭
Seems like another baby will be on the way! ლ(´ڡ`ლ)
If all other ML have side story too plus with babies, not asking much....