No, Mark Harmon plays Gibbs. And his name is Leroy Jethro Gibbs.
No, he only had one daughter (Kelly) and she was murdered
I am not 100% sure. But, I think his own son played the role of young Gibbs. Mark Harmon's son played that character. You could see the great facial resemblance between the two characters which I guess makes my guess close to being true.
Sasha Alexander played Kate. Kelly was Gibbs daughter.Portrayed by 2 different actresses:Mary Matilyn MouserBrenna RaddingNCIS CHARACTER BI0S http://ncis.wikia.com/wiki/Kelly_GibbsFull name:Kelly GibbsGender: FemaleDied:February 28, 1991Status:DECEASED
Terry Gibbs Plays Jewish Melodies in Jazztime was created in 1963.
Aviva Farber
Mr. Gibbs is played by Kevin McNally.
Richard Harris in films 1 and 2, Michael Gambon for 3 - 8, and Toby Regbo in flash backs.
Mark Harmon
Mark Harmon who plays Gibbs has 2 sons called Sean and Ty. :)
Andrea Lesley Gibbs has written: 'Play in the plays of Samuel Beckett'
Ralph Waite played the role of the father Jackson Gibbs