Ok well as for Konohamaru's father it all goes down with the secret of the Sarutobi. Hiruzen had a side job as a super pimp right after being elected as Hokage... Being possibly the strongest and best genius in the village put him in a position similar to Sauce before he defected konoha. Hiruzen actually had a daughter which he gave away right after birth because she could become a possible target and was done for her safety. A couple decades later she comes back after not seeing her dad (Hiruzen) ever, she falls in love with him.
Well piece together the details, and you find out Hiruzen is Konohamaru's dad/granddad!
So who the fk was he able to pull something like this off? Root is still in existance for a reason. Due to their past friendship Danzo kept the Sarutobi secret so far under the bridge only Kishi knew about it. Of course Hiruzen allowed his other child Konohamaru to bask in the glory of Sarutobiness as his grandson because the war was then over when he was born and he can keep close surveillance on him. And Hiruzen's daughter gets no credit in the story because it would botch Kishi's main storyline.
This is all theory and there is absolutely no proof of any of this happening in the manga.
Hiruzen did, however, share interest in ladies similar to Jiraiya (f my spelling lol) and attempted to learn some of his peeping jutsu.
Sauce= Sasuke for those who didnt pick up on that earlier.