Born at St Just, near Penzance, Cornwall, England, to Samuel and Ann Luke, John Luke came to New Zealand with his parents in July 1874 after the Cornishtin industry failed. He completed two years of an apprenticeship as an engineer before leaving for Feilding, New Zealand from where, the family were informed, they would be able to take up engineering work 50 kilometres away on the coast at Foxton while they developed the Fielding property. However, "When the Luke's landed at Wellington they discovered that Foxton was merely a paper township; it was a name on the map and the only industry there was the extraction of pipis from the beach by Maoris." Luke completed his engineering apprenticeship with The Lion Foundry, and worked on various projects before joining his father's newly established Te Aro Engineering Works in 1879. After initially struggling the business was successful and constructed several steamships. In June 1886 his oldest brother William died "after a short and painful illness in his 34th year" followed by his next oldest brother, Samuel, at 32 years of age, in December.
His political career began in 1908 with his election as member for Wellington Suburbs for the Liberal Party, but he lost his seat at the 1911 general election to Reform candidate William Henry Dillon Bell. From 1911 until 1918 he was not a member of Parliament, and was re-elected to Parliament in the as a member of the Reform Party and again 1919, in the Wellington North electorate. He held this electorate continuously until the general election of 1928, when he was defeated by the Labour candidate, by a margin of 47 votes. Luke was married in 1880 to Jacobina McGregor. He was knighted in the 1921 Birthday Honours for his work in combatting the 1918 flu pandemic, having previously been made a CMG. He was leader of the New Zealand delegation which visited South Africa in 1924 in connection with the Empire Parliamentary Association. He died suddenly on 7 December 1931, and was survived by his wife, four sons, and one daughter. His funeral service was held at St. Paul's Cathedral in Wellington, followed by a private cremation, with his ashes buried at Karori Cemetery.
Miscellanea
Lukes Lane in the Wellington CBD is named after the family business, Lukes' Foundry, which was sited there; years later, Sir John Pearce's sons set up Luke Bros foundry near Chaffers Street. Lukes' Foundry built New Zealand's first steel ship, and several lighthouses.
Sir John Pearce and his wife, Lady Jacobina Luke, donated the decorative iron gates at the entrance to Central Park, in Brooklyn, Wellington.
Lady Luke was President of the Victoria League Wellington Branch from 1920 to 1922