It seems like several people associated with this show died young
Regulars-
Lily (Peggie Castle), at 45 http://www.imdb.com/name/nm0145312/?ref_=tt_cl_t3
Jake (Dan Sheridan) at 46 http://www.imdb.com/name/nm0792152/?ref_=tt_cl_t8
Guests-
Don Kelly (5 episodes) at 42 http://www.imdb.com/name/nm0446343/?ref_=tt_cl_t5
Tom Gilson (5 episodes) at 28 (shot by his wife) http://www.imdb.com/name/nm0319712/?ref_=tt_cl_t6
Miranda Jones (3 episodes) at 38 http://www.imdb.com/name/nm0428881/?ref_=tt_cl_t5
James Parnell (3 episodes) at 38 http://www.imdb.com/name/nm0663189/?ref_=tt_cl_t9
Wendell Holmes (2 episodes) at 47 http://www.imdb.com/name/nm0392092/?ref_=tt_cl_t5
Gary Vinson (2 episodes) at 47 http://www.imdb.com/name/nm0899090/?ref_=tt_cl_t4
James Anderson (2 episodes) at 48 http://www.imdb.com/name/nm0026841/?ref_=tt_cl_t7
John L. Cason (2 episodes) at 42 http://www.imdb.com/name/nm0143806/?ref_=tt_cl_t9,
Lawman was his final show. He died in July 1961 before the last episode he was in aired in December 1961.
Frank Overton (1 episode) at 49 http://www.imdb.com/name/nm0653942/?ref_=tt_cl_t4
Robert "Buzz" Henry (1 episode) at age 40 http://www.imdb.com/name/nm0377986/?ref_=tt_cl_t8
Wayne Morris (1 episode) at age 45 http://www.imdb.com/name/nm0606998/?ref_=tt_cl_t3
Jack Lomas (1 episode) at age 48 http://www.imdb.com/name/nm0518242/?ref_=tt_cl_t5
Joan Granville (1 episode) at age 45 http://www.imdb.com/name/nm0335758/?ref_=tt_cl_t6
James Parnell (1 episode) at age 38 http://www.imdb.com/name/nm0663189/?ref_=tt_cl_t7
Rickie Sorenson (1 episode) at age 47 http://www.imdb.com/name/nm0814862/?ref_=tt_cl_t9
There are probably a few more.
Raylan Givens: You make me pull, and I'll put you down.