Garrick was the second oldest of ten children of James Francis Garrick and Catherine Eliza Garrick. His parents were married on 10 June 1832 in St Martin-in-the-Fields, Surrey, England. They subsequently emigrated to Sydney to manage a flour milling business. Garrick was born in Sydney, New South Wales, on 10 January 1836. He was educated at Sydney College. He married Catherine Garrick on 3 January 1865.
Legal career
Both Garrick and his older brother Francis James were sent to Sydney solicitors to learn the legal trade. The younger brother was admitted to the New South Wales' bar in 1860. James Francis moved to Brisbane in 1861 where only four attorneys were in practice at that time, whilst Francis James emigrated to New Zealand in February 1864. Soon after his appointment to the Queensland Legislative Council in 1869, he went to London, where he continued with legal studies and work, and was admitted to the bar in 1873. He returned to Brisbane in 1874, where he was also admitted to the bar. He worked as a crown prosecutor in various districts and was appointed Queen's Counsel in 1882.
Political career
Garrick was elected to the Legislative Assembly of Queensland for the 1867–68 period, representing the East Moreton electorate. In November 1869, he was then appointed to the Queensland Legislative Council. He went to London soon after, though, and his seat was declared vacant in December 1870 after him missing two sessions. He represented East Moreton again in 1877–78, and after East Moreton was abolished, represented Moreton 1878–1883. He was appointed Attorney-General in the Douglas ministry for a short period before the premiership went to Thomas McIlwraith in January 1879. He was an important member of the opposition led by Samuel Griffith. When Griffith took over the premiership in 1883, Garrick was appointed colonial treasurer for a brief period, before taking on the role as postmaster-general, a role that he held until 24 June 1884. Garrick was also appointed again to the Legislative Council, a role that he held from Nov 1883 to August 1894, but for most of the time he was actually in London. In June 1884, Garrick was appointed as the 5th agent-general for immigration in London. He held this post, with some interruption from 1888 to 1890, until 1895. He was successful of sending many immigrants to Queensland; in his first term, he averaged 10,000 per year.