Silas "Si" Robertson, the youngest brother of Phil Robertson, has two children with his wife Christine, a daughter named Trasa Robertson Cobern and a son named Scott Robertson. The news was revealed in Willie Robertson's best-selling biography "The Duck Commander Family: How Faith, Family, and Ducks Built a Dynasty."
You can see a picture of them here.
Scott is a member of the US Army and has been on deployment in Iraq several times. He and his wife Marsha Markert Robertson have three boys.
Trasa teaches social studies and is living in Hurst, Texas. She has been married for 15 years and has four boys.
Duck Dynasty recently wrapped up its fifth season.
Of interest, the tell-all "The Women of Duck Commander: Surprising Insights from the Women Behind the Beards About What Makes This Family Work" written by Kay, Korie, Missy, Jessica and Lisa Robertson was recently released on bookshelves nationwide. Learn more from TIME.