Luke Skywalkers adoptive Uncle was Owen Lars. Owen was Obi-Wan Kenobi’s younger brother and people always thought he would be as great as his famous brother. Owen did not want that kind of stress, so he moved to Tatooine with his wife, Beru Weth, and they set up a moisture farm.
You know the story - They raised Luke as their own son and did their best to keep Luke from realising his true identity. Owen bought the R2-D2 and C-3PO droids , Luke tried to talk him into going to the Academy early. Owen refused to let him go. Luke stormed off. Owen Lars was killed when a group of Stormtroopers were tracking down R2-D2 and C-3PO and burnt down the moisture farm when they did not fine them.
Phil Brown was the actor playing Owen Lars in Star Wars movie but Thomas Hill did the character in the Radio version.