Denis McGrath was born in Wellington on 17 June 1910, the eldest of three sons of lawyer John Joseph McGrath and Caroline Margaret McGrath. He suffered bouts of ill-health as a child, and was educated at St Patrick's College before attending Victoria University College, where he graduated with a Bachelor of Laws in 1932. He then joined his father in a joint legal practice in 1933 under the firm name JJ & Denis McGrath. In 1944, he married Margaret Fraser and together had four children. Following his father's death in 1946, McGrath carried on the firm alone for five years. In 1957, he was elected to the council of Wellington District Law Society and in 1966 he became its president. Two years later, he became president of the New Zealand Law Society upon the appointment of Denis Blundell as High Commissioners to the United Kingdom, serving a three-year term which included the centenary celebrations of the society in 1969.
Political career
McGrath served two separate terms as a Wellington city councillor. In 1947 he won a seat on the Council on a Citizens' Association ticket which he was to hold until 1956 when he did not seek re-election. In 1962 he made a comeback to local-body politics and spent two more terms on the council until he retired in 1968. He represented the city on the Council of Victoria University and in 1962 he was appointed to the office of deputy mayor. He was involved in a public selection controversy in 1965, where first-term councillor Cecil Henry Benney as chosen as the Citizens' nominee for the mayoralty by the association's executive, but Benney withdrew his nomination after it became evident that the majority of sitting Citizens' councillors instead favoured McGrath. However, McGrath refused to stand for the office of mayor and offered himself solely for the council. Benney was eventually acclaimed as the mayoral candidate, after which McGrath relented the role of deputy mayor to Benney as well. In early 1968 he announced his mayoralty candidacy for the Citizens' Association. However, in June 1968 his appointment as President of the New Zealand Law Society became incompatible with his both his candidature and council commitments and he withdrew from both the mayoral race and did not contest a council seat either in order to focus on his duties at the Law Society. He was also an active member of the National Party and was chairman of the Karori branch from 1961 to 1963.
He was appointed by the government as the chair of three Committees of Enquiry. The first was in 1970 over industrial issues affecting Air New Zealand, the second in 1972 regarding equal pay for women, and the third in 1973 over a review of parliamentary salaries policy. McGrath was appointed a Commander of the Order of the British Empire in the 1972 Queen's Birthday Honours, for very valuable services to the community. In 1978, the Wellington City Council finished construction of a pedestrian overbridge across the Wellington motorway which was named the Denis McGrath Bridge, in McGrath's honour. McGrath died at Wellington on 14 June 1986, survived by his wife, two sons and two daughters.
