The obituary, shown below, was copied from
https://www.legacy.com/obituaries/latimes/obituary.aspx?n=charles-h-williamson&pid=3017631
(it may or may not still be available there)
Charles Williamson Obituary
Williamson, Charles H.
Born on May 24, 1926 and passed away January 4, 2005. He grew up in Chester County, PA and attended Ursinus College, the Univ. of North Carolina and Yale Drama School. He served in the U.S. Navy during WWII. After his discharge he travelled and lived in Europe before settling down in New York City where he worked on a number of early television programs and did some theatre work. In 1958 he settled in Los Angeles. He was a well known collector and dealer of autographs. He is survived by his partner, Tucker Fleming; his niece, Connie Barnes and nephew, Brint Ingrams; and five grandnieces and nephews: Meg, Kelly and Bret Thomson, Eric Ingrams and Sharon Chin. There will be a celebration of Charles' life at a later date.
Published by Los Angeles Times from Jan. 9 to Jan. 11, 2005.