Alexander Onslow

Sir Alexander Campbell Onslow (17 July 1842 – 20 October 1908) was the third Chief Justice of the Supreme Court of Western Australia, which is the highest ranking court in the Australian State of Western Australia.

Onslow is a forebear of the notable Australian Macarthur-Onslow families.

Biography Onslow was the fourth son of Arthur Pooley Onslow, of Send Grove, Ripley, Surrey, by his wife, Rosa Roberta, daughter of Alexander Macleay, F.R.S., Speaker of the first New South Wales Legislative Council. Onslow was educated at Westminster and Trinity College, Cambridge, where he graduated B.A. in 1864. He entered at the Inner Temple on 15 January 1862, was called to the bar on 17 November 1868, and went the Home Circuit. On 4 February 1878, he married Madeline Emma Loftus, daughter of Rev. Robert Loftus Tottenham, of Florence, and granddaughter of the Bishop of Clogher. This arrangement did not actually take place and Sir Henry T. Wrensfordsley was sent out to the colony in 1890 as Acting Chief Justice. Mr. Onslow returned to Western Australia and resumed his occupancy of the office of Chief Justice in July 1891.

He retired in 1901 and returned to England, where he died on 20 October 1908.

Onslow was knighted in 1895 for services rendered to the Queen's colonies since 1878.

Family Father Arthur Pooley Onslow - father

Mother Rosa Roberta, née McLeay - mother Alexander McLeay (1767–1848) - Rosa Roberta's father Rosa Roberta's siblings William Sharp Macleay (1792–1865) He never married and the heir to his estate was his brother, George W. J. Macleay Sir George W. J. Macleay (1809–1891) James Robert (1811–1892) secretary of the commission for the suppression of the slave trade in Cape Colony. Margaret (b. 1802) married Archibald Clunes Innes (1800–1857) in 1829 Christiana Susan (b.1799) married Captain William Dumaresq (1793–1868) in 1830 Barbara Isabella (b.1797) married Pieter Laurentz Campbell (1809–1948) in 1834.

Siblings Arthur Alexander Walton Onslow (1833–1882) - brother James Macarthur-Onslow - nephew