| Full name: | Arthur Calvert Keir Steuart Clarke | 
| Born: | 26th January 1884 | 
| Education: | Trinity College, Glenalmond; RMC, Sandhurst | 
| Occupation: | Army Officer | 
| Other Sports: | Rugby | 
| Relations: | Brother: AHS Clarke | 
| Teams: | Trinity College, Glenalmond (Miscellaneous: 1900); Nairn and District (Miscellaneous: 1923); Elgin and District (Miscellaneous: 1923); North of Scotland League XI (Miscellaneous: 1923); North of Scotland (Miscellaneous: 1923-1934); Fort George Garrison (Miscellaneous: 1928)  | 
| Lists of matches and more detailed statistics | |