The television show “NCIS” explores the professional and personal lives of a fictitious team of special agents as well as the cases they investigate.

On the television show “NCIS,” he played the part of Dr. Donald “Ducky” Mallard, which brought him the most fame. In addition to those roles, the actor is well known for his work in “The Great Escape” and “The Man from U.N.C.L.E.”

Since McCallum’s father, David McCallum Sr., was a violinist in an orchestra, his family always pushed him to pursue a career in music.

This was particularly true throughout McCallum’s boyhood. The oboe was one of McCallum’s first musical pursuits, but by the time he was in his late teens, he had moved his focus to acting and was actively seeking a career in theater.

Even after that, he continued his education at the Royal Academy of Dramatic Art in London.

McCallum was previously married to the actress Jill Ireland. She is most well-known for her work in movies, but during the course of her career, she has also made a number of appearances on various television shows.

However, rumors have it that Ireland has moved on and is now seeing actor Charles Bronson, who was McCallum’s co-star in “The Great Escape.”

It is apparent that McCallum did not allow himself to be depressed for an excessively long period of time, though, since he married Katherine Carpenter, his present wife, in the exact same year.

They had first come into contact with one another in 1965, when Carpenter was working as a model in New York during a photo shoot for “The Man from U.N.C.L.E.” While McCallum was 32 years old at the time, Carpenter had just turned 21 years old.

McCallum popped the question to Carpenter not long after it became public knowledge that his marriage to Ireland had ended, and the newly formed pair married the ceremony not more than a few short months later.

It is clear that McCallum and Carpenter bring out the best in one other, and since they have been married, the pair has been blessed with a son called Peter and a daughter named Sophie, in addition to a number of grandkids.

The actor is a devoted grandparent to his eight grandchildren. He said, “They call me grand-daddy, we don’t like it when you call me grandfather because it makes me seem old, yet I’m not elderly at all, some of them even had the audacity to call me grand-ducky.”

Despite the fact that he has an extremely hectic acting schedule, McCallum has made it a point to give his family the utmost importance.

Over the course of many years, McCallum has used Facebook to post a number of images that showcase his stunning family. In 2016, McCallum uploaded a touching image on his social media accounts, in which he was surrounded by his family, mostly his grandchildren, who were all smiling and laughing together. He wrote in the caption for the picture:

“Today, August 27th, marks one year since I was naturalized as a citizen of the United States! The Baked by Melissa cookbook was a gift from my grandchildren.”

Even though he is a loving grandpa to his grandchildren, it is abundantly clear that McCallum’s family would not be whole without the contribution of his dedicated spouse.

McCallum and Carpenter are still married to this day, which means that they have been married for a combined total of 55 years.

The pair seems to be extremely supportive of one another and to still be very much in love with each other despite the fact that a significant portion of their courtship has since been kept out of the limelight.