David McCallum and Katherine Carpenter – 53 years

Half a century of marriage is something to be truly proud of, and NCIS star David McCallum and Katherine Carpenter have some major bragging rights! McCallum rose to fame thanks to The Man From U.N.C.L.E., a 1960s TV series. Meanwhile, Katherine Carpenter is a former model.

Katherine is actually David’s second wife–his first wife left him for his co-star Charles Bronson back in 1967. But he met the beautiful 21-year-old Katherine the same year, and the rest is history! Aside from their long and successful marriage, the couple also has two children together.