Louis Burton Lindley Jr. was born in Kingsburg, California, the son of Sally Mosher (née Turk) and Louis Bert Lindley Sr., a Texas-born dairy farmer. Young Lindley was an excellent horse rider from an early age. Known as "Burt" to his family and friends, he grew bored with dairy farming and began to make a few dollars by riding broncos and roping steers in his early teens. His father found out and forbade this activity, but Lindley took no notice, went to compete in a rodeo, and was told by the doubtful rodeo manager that there would be "" (i.e. little chance of any prize money) for him.