|Date of birth||1872|
|Place of birth||Neilston, Scotland|
|Date of death||Unknown|
|* Senior club appearances and goals counted for the domestic league only. † Appearances (Goals).|
Neilston-born Clarkin signed for Blackpool from Newton Heath in June 1896. He made his debut for the club in their first-ever match in the Football League, on 5 September 1896 (see Blackpool F.C. season 1896–97). He went on to appear in 28 of the club's 30 games that season, scoring eight goals.
The following season, 1897–98, Clarkin made 26 appearances and scored five goals.
- Calley, Roy (1992). Blackpool: A Complete Record 1887–1992. Breedon Books Sport. ISBN 1-873626-07-X.
- Joyce, Michael (2004). Football League Players' Records 1888-1939. ISBN 1-899468-67-6.