Jessica Biel and Justin Timberlake‘s family joyfully welcomed a baby boy. For months, Timberlake and Biel kept their pregnancy a secret, and now they have let People magazine know they have a newborn son.

On his birthday, January 31st, Timberlake publicly acknowledged that he and his wife were expecting by posting a picture of him kissing his pregnant wife’s belly. He also posted

Thank you EVERYONE for the Bday wishes! This year, I’m getting the GREATEST GIFT EVER. CAN’T WAIT.#BoyOrGirl #YouNeverKnow #WeDontEvenKnow#WeAreTakingBets

The couple named there son Silas Russell Timberlake. Silas was his late grandfather’s middle name. Russell is his Timberlake’s middle name and the first name of his father. This is not the first time that Timberlake has paid honor to his grandfather. His clothing line ,”William Rast”, founded with Trace Ayala., is a combination of Timberlake’s grandfather’s first name and Ayala’s grandfather’s last name.

No matter how many partnerships Timberlake participates in, he has said Biel is his “favorite collaborator. Timberlake and Biel were married on October 19, 2012 at a destination wedding in Fasano, Italy. Both were child stars. Biel is known for playing the oldest daughter of the Camden family on the series Seventh Heaven. Timberlake popularity covers many different genres. He has been on the television program, Mickey Mouse Club. His popularity surged when became one of the members hugely successful boy band, N’Sync. He later went on to have an equally successful solo musical career. Timberlake has also found time to act on the big screen in some movies, such as Social Network.