no
In order to marry anyone you first need the Amulet of Mara. You can acquire this amulet from Maramal at the Bee and Barb in Riften.
Usually, to get married in Skyrim, you will need to do a quest for the person you are trying to marry.
Isnt nocturnal a daedra? if so then i doubt it
No you can't
No, there is a limited selection of people you can marry, you can only choose from amongst those.
No sorry thats a fault with the game there sorting it in the next patch
Skyrim for Pimps - 2011 Honey I Killed the Kids 4-3 was released on: USA: 22 January 2013
Ysolda because she will end up being an asset to you
You cant exactly have kids, you can adopt. You go to the honorhall orphanage in riften. You can only adopt if you download the hearthfire add-on
He did not have kids, nor did he marry.
No.
This sounds like a mod, not part of the vanilla game. You'd have to see what the mod says.