1. coetaneous, coeval, contemporaneous -- (of the same period)
coeval can be used as a noun
1. contemporary, coeval -- (a person of nearly the same age as another)
1.
The Draculas were, says Arminius, a great and noble race, though now and again were scions who were held by their coevals to have had dealings with the Evil One. - from Dracula by Bram Stoker