You were a very poor girl living on the streets of a town. You heard of an unmarried, heirless lord who had died in a distant war. You got his manor in the country side and masquerade as his distraught, grieving widow.
One day you find out lord jack is in fact *not* dead, is at the manor, and not intent on exposing or killing you.
Looks like you get to out your acting skills to the test as his wife