Black swans are a genetic anomaly where I come from, but they do happen. It's difficult to say about womens' armour, since we have none to look at, and armour was not very common for the common man, never mind woman, in the first place. Scale mail was more common in the earlier part of the era, and then long chain mail, both of which bio-degrade nicely when buried...leaving us with "not much". The picuter stones don't show women in armour, as far as I can remember.
Yes, Siv presumably lives with Tor, her children and Roskva in the gigantic wooden hall Bilskirnir. Grimnismal says that Bilskirnir is the biggest of all wooden halls, and that it has 540 rooms. It is located in Asagard in the country of Thrudheim. Where Siv lives is implicit, since she's married to Tor, but she is just barely mentioned in the oral tradition and litterature, and so is not mentioned to have her own dwelling. She is also not included in the list of goddesses in the Edda, so we know very little about her. I've been told that the idea of her being a fertility goddess is a later invention (as in late 1800's) where she was coupled with fertility on account of her golden hair, and now that I've checked, on account of your asking, I cannot find any traces in the archaeology of her being worshipped, so that may be true. I have one more source I want to check, in terms of place names, which is usually quite telling, but it'll have to wait until I am not so swamped.
I am not so good at the runes in terms of which god and goddess is attached to what rune, other than each aettir, since I do not meddle with galdr. I can read runes in terms of rune casting (I will get back to you re your mail on rune sets, btw, it's just that I've been slammed with work and now I'm leaving town for a week or so with no internet hook-up - going in the sticks!! Yay!) and in terms of alphabet, but I purposely stay away from galdr and rely on the Norns doing their thing. Runesinger knows more about what it entails, so maybe you could PM her with your question. Or google it - most sites will tell you what/who's attached to what rune.