Mark Johnson

From Memory Alpha, the free Star Trek reference.

Mark Johnson was the man Kathryn Janeway was engaged to in 2371. (VOY: "Caretaker")

Following the loss of the USS Voyager, Johnson was devastated, but he held out hope that Janeway and the rest of the crew were alive longer than most people did. Eventually he realized that he was clinging to a fantasy. He began living his life again, meeting people and letting go of the past.

After the Voyager handled the situation with the space-dwelling lifeforms, Kathryn Janeway put a picture of Mark into her ready room. (VOY: "Elogium")

In early 2374, Johnson married a woman who worked with him. He was relieved when it was revealed that Voyager hadn't been destroyed and was in fact trapped in the Delta Quadrant. He sent a letter to Kathryn Janeway, telling her what had happened in his life and that he was sorry. (VOY: "Hunters")

[edit] Background

Mark Johnson was played by Stan Ivar in "Caretaker" and "Persistence of Vision". His surname was never said aloud on screen, but it can be read from the "Dear John" letter Kathryn received in "Hunters". In Jeri Taylor's novel Mosaic, Johnson's full name is given as Mark Hobbes William Johnson.