J. Simpson Cumming MD was physician.
Cumming was admitted in 1886 as one of the original lay members of Glasgow Art Club. He was among those Glasgow painters and architects who in 1891 appended their names to a list requesting that the Corporation of Glasgow buy JW's Arrangement in Grey and Black, No. 2: Portrait of Thomas Carlyle (YMSM 137) (#12326). He lived at 24 and later at 20 Blythswood Square, Glasgow.
Records of Glasgow Art Club.