As part of the preparations for the centenary of the Leinster Senior League in 2019, the LCU is compiling information on all competitions held under its aegis. Unfortunately this has thrown up many gaps in the lists of winners and runners up. One record that is complete, however, is for the Leinster Schools Senior Cup. This competition started in 1905 and has been competed for every year since then. For a full list of schools that have won this competition go to Archive > Articles.