Arrival on the Cygnet in 1833 https://www.wikitree.com/wiki/Walpole-201.

George was not knighted, his brother Luke was. George became QC 1875.

https://adb.anu.edu.au/biography/leake-george-walpole-4000

(not Sir) George Walpole Leake (1825-1895), barrister and magistrate, and Sir Luke Samuel Leake (1828-1886), merchant and Speaker, were born in Stoke Newington, Middlesex, England, the first and third sons of Luke Leake and his wife Mary Ann, née Walpole. Their father arrived in Western Australia in 1829 and in 1833 their mother followed in the Cygnet with the two sons.

George was sent to King's College, London, and returned briefly to the colony on his way to study law in Adelaide. After a visit to Perth in 1843 he spent some years in Melbourne before settling in Perth as a practising barrister. In 1852 he was admitted to practise as a notary public. Despite an earlier refusal he acted as crown solicitor in 1857 and again in 1858; his appointment was confirmed in 1860. He became acting police magistrate at Perth in 1863 and magistrate of the local court in 1864. Among other temporary posts he acted as chief justice in 1879, 1880 and 1887, as puisne judge in 1887 and 1889-90, and in 1872, 1874-75, 1879-80 and 1883 as attorney-general, an office which gave him a seat on the Legislative Council. In 1890-94 he was a nominee member of the first council under responsible government. He had been police magistrate for Perth in 1881-90 when he retired to practise as a Q.C. He had an interest in the Inquirer which he edited in 1865. In 1890 he compiled an index to the Western Australian statutes and advocated the establishment of a law library. He had been a foundation member of the Perth Town Trust in 1842 and vice-president of the Swan River Mechanics' Institute in 1864-65. Large, genial and charitable, he spoke well despite a slight hesitancy. He featured in many controversies. His eccentric wit and the justice he dispensed was not always conventional and his antipathy to the chief justice, A. P. Burt, did not help his ambition for permanent elevation to the bench. In 1880 during an arbitration case he threw an inkstand at the defending counsel, Septimus Burt; he apologized next day but claimed that he had been annoyed by Burt for ten years. Leake's unreliability embarrassed the authorities and the Colonial Office soon resisted his promotion to higher office even for short terms. In July 1887 his appointment as acting judge led to a question in the House of Commons.

In 1886 G. W. Leake contested his brother's seat for Perth in the Legislative Council. During the election an opponent, John Horgan, published a daily manifesto in which an unnamed magistrate was accused of corruption. Leake sued him for libel and was awarded £100 damages. He died on 3 October 1895, predeceased in 1888 by his first wife Rose Ellen Gliddon whom he had married at Adelaide on 6 September 1850; he was survived by seven of their eight children, by his second wife Amy Mabel May, whom he had married in Perth on 7 January 1893, and by their infant daughter.

His only son to reach manhood was George (1856-1902), who became a K.C. (and posthumously CMG), and was premier of Western Australia in 1901-02.