A DT search for "percy french" turns up the following, plus a couple where he's mentioned in the notes. I included the ones mentioned by other folks just so all the links were in one lump.

ARE YE RIGHT THERE, MICHAEL?
PRETENDY LAND
SLATTERY'S LIGHT DRAGOONS
PRIDE OF PETROVAR
MOUNTAINS OF MOURNE
PHIL THE FLUTHER'S BALL
COME BACK PADDY REILLY
DONEGAN'S DAUGHTER
ABDUL ABULBUL AMIR