Character's name: "Ben Cartwright"
Birthday: 02/12/1915
Date of Death: 09/11/1987
Birthplace: Ottawa, Ontario, Canada
Biography:
Lorne Greene (February 12, 1915 – September 11, 1987), was the stage name of Lyon Himan Green, OC, a Canadian actor. His television roles include Ben Cartwright on the western Bonanza, and Commander Adama in the science fiction movie and subsequent TV Series Battlestar Galactica. He also worked on the Canadian television nature documentary series Lorne Greene's New Wilderness, and in television commercials as a dog food spokesman. Description above from the Wikipedia article Lorne Greene, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Character's name: "Joe Cartwright"
Birthday: 10/31/1936
Date of Death: 07/01/1991
Birthplace: Forest Hills, Queens, New York City, New York, USA
Biography:
Michael Landon (born Eugene Maurice Orowitz; October 31, 1936 – July 1, 1991) was an American actor, writer, director, and producer. He is known for his roles as Little Joe Cartwright in Bonanza (1959–1973), Charles Ingalls in Little House on the Prairie (1974–1983), and Jonathan Smith in Highway to Heaven (1984–1989). Landon appeared on the cover of TV Guide 22 times, second only to Lucille Ball.

Character's name: "Candy Canaday"
Birthday: 08/25/1938
Date of Death: 11/16/2015

Character's name: "Griff King"
Birthday: 12/31/1947
Birthplace: Glendale, California, USA
Biography:
Tim Matheson (born Timothy Lewis Matthieson; December 31, 1947) is an American actor, director and producer. He is perhaps best known for his portrayal of the smooth-talking Eric 'Otter' Stratton in the 1978 comedy Animal House. His other well-known roles are as Vernon 'Doc' Mullins on Netflix's Virgin River, Henry Kaslan in the remake of Child's Play (2019), Dr. Brick Breeland on CW's Hart of Dixie, Vance Wilder Sr. in National Lampoon's Van Wilder, John Hoynes on West Wing, Al Donnelly in Black Sheep, Alan Stanwyk in Fletch, Officer Phil Sweet in Magnum Force, David Poe in How to Commit Marriage, Mike Beardsley in Yours, Mine & Ours (1968), and Mark Harmon in Divorce American Style. He also voiced the cartoon character roles of Jonny Quest, Jace in Space Ghost and Dino Boy, and Samson in Young Samson & Goliath.

Character's name: "Jamie Hunter Cartwright"
Birthday: 01/17/1956