Here, we can see a rough sketching of Young Luke Skywalker with his foster parents (Beru Lars and Owen Lars) at the moisture farm.

To find more information on Luke, Beru and Owen, please visit the official following web site's pages at:
http://www.starwars.com/characters/luke_skywalker/
http://www.starwars.com/characters/beru_lars/
http://www.starwars.com/characters/owen_beru/