Hey, new to the game, and loving it, first time playing this type of game, as in huge world and red dead like maps n game

You know between Megaton and the Supermarket, I was walking there at nite, and a little boy came up to me and said that giant ants were attacking his village of "Greyditch", and then gives u the option to take up a quest to go there, kill the ants, and find his father, anyway, I have done that, and now pip boy says to return to him to tell him about the mission, but I forgot where he said to meet him ?

any body know ?

Thanks B)