The gentleman pictures was in an early TV play (a Desilu production - NOT involving Lucille Ball!) in the early to mid 1950s to 1960s. This production was about Mrs Surratt and featured a famous actress from the silent era of film.
"The Past is a foreign country...they do things differently there" - L. P. Hartley
I didn't think that The Story of Mary Surratt ever made it to television? It was a Broadway play by John Patrick (we have a copy of the script at Surratt House), and it only ran for 11 performances in 1947. I do stand corrected that it was Dorothy of the Gish girls, not Lillian.
Desilu produced The Mary Surratt Case in 1956 as part of the Joseph Cotton Hour. Virginia Gregg played Mary in that one, but there were very few supporting actors - none of which I ever heard of. PLEASE, tell us who that weird looking man is/was!!!