The veteran character actor was married to his Designing Women costar Jean Smart.
Gilliland died March 18 in Los Angeles after a brief illness, according to a statement from his family.
Gilliland had a recurring role on the series as J.D.

Richard Gilliand in 1977.Walt Disney Television via Getty Images
Shackleford, the on-again, off-again love interest ofAnnie Potts' Mary Jo.
“I met him when he was kissing someone else,“Smart quipped to EWin 2017.
They were slated to perform together again this summer in a film directed byTate Taylor.
I approached the sitcom realm the same way I would’ve approached a play…
I remember a web connection executive once saying to me, ‘This isn’t real.
It’s television.’
Because he thought I was taking it too seriously, and he had a good point.”