NCIS Creator Donald Bellisario's Kids Have Held Roles On Both Sides Of The Camera

Donald Bellisario's three other children within the acting and producing realm are Nicholas, Julie, and David. 

His older children, Julie and David, a son and daughter from his very first marriage, both had a part in producing episodes for "NCIS." Julie stayed for a year between 2008 and 2009, while David worked on "NCIS" from 2003 until 2009, and then transitioned to the spinoff "NCIS: Los Angeles" where he stayed from 2009-2019. David, sadly, passed away in 2020, but Julie moved on to work on the 2011 film "Dimensions" directed by Sloane U'Ren though not much else about her has been known since then. 

Nicholas, Troian's younger brother, played the character Marcus in an episode of his father's show "JAG." The episode he appeared in served as a pilot episode for the later series "NCIS." In that episode, audiences were introduced to Leroy Gibbs (Mark Harmon), Anthony DiNozzo (Michael Weatherly), and Abby Sciuto (Pauley Perrette). 

Donald Bellisario indeed influenced his audiences and television, but also his kids. They might not have discovered acting or producing had it not been for their old man. Fans will continue to enjoy the talent that prevails from this big and happy family; there will be more to enjoy as time goes on.