Are Mark Hamill and Dorothy Hamill related?

Answer 1

Mark Hamill was one of seven children: two brothers, Will and Patrick, and four sisters, Terry, Jan, Jeanie, and Kim.

Mark Hamill's paternal ancestry is:

William Thomas HAMILL, Jr.

William Thomas HAMILL, Sr. (b. 1901, Colorado)

Hockley Thomas HAMILL (b. 1873, Colorado)

William Arthur HAMILL (b. 1836, England; imm. 1842)

Dorothy Hamill's paternal ancestry is:

Chalmers Martin HAMILL, Jr. (b. 1922, Ohio)

Chalmers Martin HAMILL, Sr. (b. 1884, Illinois)

Robert E HAMILL (b. 1857, Alabama; father was from Scotland)

So, the answer to this question is a qualified no, they do not have a common ancestor within the last four generations.

Answer 2

During an interview with Al Michaels of NBC on February 23, 2010, Hamill stated that she had gotten married again.