Oh, yes. Even more, they all are ancestors of my Skyrim character.
My character for main quest line, Redguard Hossul, was a friend with Freyrick Hust, who is now a husband to my another character, bosmer I created for Summerset quest line. As you can guess, Hossul and Freyrick broke up their relationship because Hossul thought Freyrick's wife was a bad choice for him. It is a very short version of what happened, at the moment I'm writing full story
I actually haven't done this but me and my mate were joking about the idea of our ESO characters being ancestors to our Skyrim characters as the Skyrim events are something like a 1000 years after the ESO events.
I imagine my healer being an ancestor to my other Elder scroll chars in oblivion and skyrim. They are all part of a long line of healers and worshippers of Mara and Akatosh.