Henry Marcus Clark was born in Liverpool, England, and migrated to Victoria in 1880. He soon moved to Sydney, and within three years of arriving had established a small drapery shop in Newtown. The shop prospered, and by 1902 had become a public company. Clark married a native-born Australian, Martha Annie Day.
Clark's son, Reginald, carried on the company after his father's death in 1913. Reginald had a strong interest in numismatics and became president of the Australian Numismatic Society. His Australasian token collection was of international reknown.
Carlisle, L.J., (1983). Australian Commemorative Medals and Medalets, p.60.
Australian Dictionary of Biography website http://adbonline.anu.edu.au/adbonline.htm