Coeval

Part of speech: noun (n.)

One of the same age; a contemporary. As if it were not enough to have outdone all your coevals in wit. Pope.

Part of speech: adjective (a.)

Of the same age; existing during the same period of time, especially time long and remote; -- usually followed by with. Silence! coeval with eternity! Pope. Oaks coeval spread a mournful shade. Cowper.