Hello, Your Free Thomas (Jr.) & his mother Olive Lyon are buried in the Eugene Pioneer Cemetery, Eugene, OR, in unmarked graves. Thanks to your post, I now know of their connection to each other.
According to the available records, Olive was born 1838, died in Eugene, OR 5 Jan 1911. Her son Free made the burial arrangements.
Free Thomas was born 4 Jul 1854, and died 30 Dec 1916 in Eugene. He was an architect; burial arrangements were made by Mrs. C. K. Thomas; he was married.
Would you know of a connection to Emma Alice Ellmaker Beaumister (1861-1919)? She is buried in the same group of graves, purchased by Free Thomas.
This is all I know. I hope this helps.
Sincerely, Dorothy Brandner, Eugene Pioneer Cemetery Assoc.