The Egyptians were invaded by the Romans around 12,000 BC.
Many thousands.
No.
No, because she was a virgin goddess and couldn't get married.
Yes, as Hestia was the daughter of Cronus and Rhea, Aunts: Theia, Themi, Mnemosyne, Phoibe and Tethys Uncles: Okeanos, Koios, Krios, Hyperion, Iapetos