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|Irish name||Seán Ó Mearnáil|
Marnell joined the team during the 1975-76 National League and was a member of the team at various intervals for much of the next decade. An All-Ireland medalist in the minor, under-21 and junior grades, he won one All-Ireland winners' medal at senior level as a non-playing substitute.
- "Kilkenny GAA profile". Hogan Stand website. Retrieved 12 September 2012.
|Kilkenny Minor Hurling Captain
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