What is st paddy?

Some articles on st paddy, st:

St. Paddy
... St ... Paddy (1957–1984) was a British Thoroughbred racehorse and sire ...
Lester Piggott - Major Wins
... Roussalka (1975), Chalon (1982) Derby - (9) - Never Say Die (1954), Crepello (1957), St Paddy (1960), Sir Ivor (1968), Nijinsky (1970), Roberto (1972), Empery (1976), The Minstrel (1977), Teenoso (1983 ... Stakes - (5) - Roan Rocket (1964), Petingo (1968), Thatch (1973), Jaazeiro (1978), Bairn (1985) St ... Leger - (8) - St Paddy (1960), Aurelius (1961), Ribocco (1967), Ribero (1968), Nijinsky (1970), Athens Wood (1971), Boucher (1972), Commanche Run (1984) Sun Chariot Stakes - (6) - Popkins (1970 ...