Well, my family name is inherited from my step great-great-grandfather (my great-great-grandmother was pregnant when he married her), hence my great-grandfather, Al Holbrook, was the first one of that bloodline with that name. My grandfather was his only son (I have a mad great Aunt, but she's estranged from the family), and my father was his only son (one son, two daughters - both Aunts are married with kids, Autism is evident in my cousins). So, the only ones who can pass on the family name are me and my brother, and he's certainly intending to get married sometime soon; it'll probably help that fertility runs in his girlfriends family. As for me, hopefully I will as well, but we shall just have to wait and see. On
On my mothers side, her sister has no children, but her brother has two. My grandfather was an only child, and my grandmother has one brother, who's got two children; I know his daughter has a son and a daughter (I've met them), but I don't know if his son does.
So, the Holbrook lineage isn't likely to die out anytime soon, and the cadet branches are going okay. On my mothers side, the Tadgell line seems to be doing okay, but I'm not sure about the Owen line.