Roy Orbison Jr. and Wife Asa Welcome Baby No. 4, Sun Jakob: ‘Our Little Sunshine’ (Exclusive)

The Orbison family has added another baby boy to the family!

Roy Orbison Jr and his wife Asa welcomed another son to their brood, a rep for the couple tells PEOPLE exclusively.

The couple welcomed son Sun Jakob Orbison on Monday, September 11, the couple confirms. Baby Sun was born at Cedars-Sinai Medical Center in Los Angeles at 11:20 p.m., weighing 8 lbs., 11 oz. and measuring 21 inches long. Sun joins big brothers Love, 17 months, Bo, 5, and Roy Orbison III, 7.

Orbison Jr. tells PEOPLE about the familial ties behind the baby boy’s name.

“We want Sun to know his family’s story; his name is inspired by the legendary Sun Records where rock and roll was born with his grandfather Roy Orbison, Elvis, Jerry Lee Lewis, Carl Perkins and Johnny Cash. He’s our little sunshine,” Orbison Jr. says.”