1920 Founded as Richmond Asylum Hurling Club
1923Name Changed to St Dympna’s
1937Junior Hurling Champions
1950Junior Hurling Champions
1952 Intermediate Hurling Champions
1953 Name Changed to St Brendan’s
1970 Junior Hurling Champions
1971 Junior A Football Champions
Intermediate Hurling Champions 

1972 - Intermediate Football loss to Ballyboughal
1974 Intermediate Football loss to Ballyboden SE
1979 Senior Hurling loss to Crumlin
1980 Senior Hurling Champions vs Faugh’s

1987 Intermediate Football loss to St Brigid’s
Junior Hurling Champions
 
1993 - Junior B Football Champions
2009 - Junior E Football loss to Wild Geese
2010 - Junior D Hurling loss to Parnell’s
2011 - AFL 9 Champions
2013 - AHL 6 Champions, AFL 8 Champions (Unbeaten Season)

Ladies Team is Started
Longmeadow’s becomes Home Pitch 

AFL 7 Runners-Up. Promoted to AFL 6

Junior C Hurling loss to Raheny

2014 - Underage Academy is Started 
 
2015 Ladies Div 9 Cup loss to Clanna Gael
Ladies Div 9 League Champions 

2016 - Ladies Junior G loss to St Monica’s 
2017 - Ladies Junior F Champions, AFL 6 Runners-Up. Promoted to AFL 5

2018 - Ladies Footballers lose Junior C final in extra time

2019 - Ladies Footballers win Junior C Championship,

Ladies Footballers (ii) win Junior H Final

2020 - Adult Ladies football (i) lose out narrowly in Junior B Final

Ladies Footballers (ii) Junior G Shield Winners

2021 - Adult Ladies Football (i) lose out after replay in Junior B Championship Final, Camogie Restarted - Adult Camogie wins Junior 6B championship

2022 - Adult Ladies Football (i) lose out in Junior B Championship Final, Adult Camogie wins Junior 5 Championship, Hurling win Junior D Championship 

2023 - Adult Ladies win Div 4 league, Adult Camogie win Junior 4 Championship.