Wikipedia:WikiProject Gaelic games/Biographies/Footballers

Infobox

Séamus "Cheddar" O'Neill (born 29 February 1981) is a former Gaelic footballer. His league and championship career at senior level with the Longford/Leitrim/Roscommon/Westmeath county team spanned twenty years from 1998 to 2018.

Introduce the player and summarise his most important features.

==Early life and family==