Jeremiah Charles Walsh was a former international rugby union

Rugby union

Rugby union, often simply referred to as rugby, is a full contact team sport which originated in England in the early 19th century. One of the two codes of rugby football, it is based on running with the ball in hand...

 player.

He was capped twenty-six times by Ireland as a centre between 1960 and 1967:

1960 v Scotland (Dublin) L 6-5 (FN)

1960 v South Africa (Dublin) L 8-3

1961 v England (Dublin) W 11-8 (FN)

1961 v Scotland (Murrayfield) L 16-8 (FN)

1961 v France (Dublin) L 15-3 (FN)

1961 v South Africa (Cape Town) L 24-8

1963 v England (Dublin) D 0-0 (FN)

1963 v Scotland (Murrayfield) L 3-0 (FN)

1963 v Wales (Cardiff) W 14-6 (FN)

1963 v New Zealand (Dublin) L 6-5

1964 v England (Twickenham) W 18-5 (FN)

1964 v Scotland (Dublin) L 6-3 (FN)

1964 v Wales (Dublin) L 15-6 (FN)

1964 v France (Paris) L 27-6 (FN)

1965 v France (Dublin) D 3-3 (FN)

1965 v Scotland (Murrayfield) W 16-6 (FN)

1965 v Wales (Cardiff) L 14-8 (FN)

1965 v South Africa (Dublin) W 9-6 (FN)

1966 v France (Paris) L 11-6 (FN)

1966 v Scotland (Dublin) L 11-3 (FN)

1966 v Wales (Dublin) W 9-6 (FN)

1967 v England (Dublin) L 8-3 (FN)

1967 v Scotland (Muurayfield) W 5-3 (FN)

1967 v Wales (Cardiff) W 3-0 (FN)

1967 v France (Dublin) L 11-6 (FN)

1967 v Australia (Sydney) W 11-5

That Walsh's prowess was mainly defensive was shown by his scoring record: it was not until his 26th appearance that he managed a try for Ireland. But the occasion, that famous victory at Sydney Cricket Ground, could scarcely have been bettered. With that he retired, in order better to pursue his career as a doctor.
Walsh was selected for the 1966 British & Irish Lions tour to Australia and New Zealand, but did not play in any of the internationals as he returned home early from Australia due to the serious illness of his father . He also toured South Africa

1961 Ireland rugby union tour of South Africa

1961 Ireland rugby union tour of South Africa. Between 1906 and 1960 South Africa had played Ireland on five occasions. However all of these games had been played in Ireland. In 1960 South Africa had beaten Ireland 8-3 at Lansdowne Road. The following year Ireland embarked on their first tour of...

 and Australia

1967 Ireland rugby union tour of Australia

-Matches:-Touring party:*Manager: Eugene Davy*Assistant Manager: Des McKibbin*Captain: Tom Kiernan-Backs:-Forwards:...

 with Ireland in 1961 and 1967 respectively.
He played club rugby for University College Cork RFC

University College Cork RFC

University College Cork Rugby Football Club is the rugby union team of University College Cork, based in Cork in the Republic of Ireland. They currently play in Division 1B of the AIB League. Founded in 1872, they originally played as Queen’s College Cork, as UCC was then known. Recent successes...

 and Sundays Well.