I see, I wasn't sure that was the case in the Elder Scrolls, but even if it wasn't dun let me stop you from doing it however you want. =)
Yes, I knew Skyrim happens 200 years after Oblivion and that was the thing that gave me the idea in the first place, sort of assuming that Elder Scrolls elves also live more than 150 years. And yes, that means that my Oblivion character could technically still be alive, but hey, even if he was alive, he could have a son anyway! Wow!

Using my Oblivion dunmer crossed my mind, but when I saw the face models in Skyrim, I thought they looked way too different (even though it's the same race, just a different graphical interpretation) to reflect the same character's personality.