The Republic of Ireland made their début in international rowing at Henley during the 1948 London Olympics. Pady Harrold was a member of the eight that finished third in their heat behind Canada and Portugal before losing by 20 seconds to Norway in their repêchage heat. Harrold rowed with the Neptune Rowing Club, Dublin, and was also a member of the club committee. In1949 he was a member of the Neptune eight that won the Irish Amateur Rowing Union’s (IARU) Leander Cup at Cork. Harrold also rowed as stroke to the Neptune Fours.