Liam Aaron McDermott was born on March 13th, 2007 to to Tori Spelling and Dean McDermott.

He Arrived by c-section and weighed in at 6 lbs, 6 oz, when he was born at Los Angeles' Cedars-Sinai Medical Center.

He is the younger half-brother of Jack Montgomery McDermott (b. 1998) and the older brother of Stella McDermott, Hattie McDermott (b. 2011) and Finn McDermott (b. 2012).

Grandson of David McDermott, Doreen McDermott (died), Aaron Spelling and Candy Spelling. Nephew of Randy Spelling.

Gets his middle name Aaron after his late maternal grandfather Aaron Spelling.