Balgruufs kids are @ssholes.
Who is the mother anyway? and where is she? o.o
Dead?
(btw, who's the father of Lars Battle-Born? As far as I know the Battle-born household consists of the head of the family (Olfrid or whatshisname), his wife, their grown children (Idolaf, Jon and Lars' mother who I confuse with the Gray-mane girl all the time), and little Lars. Sure, his father could be dead, but if you ask him what a kid do for fun in Whiterun, he explains that he no longer climbs the roof of Dragonsreach because his father keeps catching him. Sorry, a little off topic...)