Background
Molesworth was born in Dublin, the only son of Hickman Blayney Molesworth, a solicitor, by his first wife, Wilhelmina Dorothea, daughter of Brindley Hone. Molesworth was descended from Robert Molesworth, 1st Viscount Molesworth.
Member of the Victorian Legislative Council
Molesworth was born in Dublin, the only son of Hickman Blayney Molesworth, a solicitor, by his first wife, Wilhelmina Dorothea, daughter of Brindley Hone. Molesworth was descended from Robert Molesworth, 1st Viscount Molesworth.
Robert attended Trinity College, Dublin where he graduated Bachelor of Arts in 1826 and Master of Arts
In 1833. After he was called to the bar in 1828, he practised law until he emigrated to Australia in 1852. After initially arriving in Adelaide the Molesworths soon moved to Melbourne and he quickly established a large legal practice. On 27 January 1853 Molesworth was acting chief justice during the illness of Sir William à Beckett.
Molesworth was appointed Solicitor-General on 25 November 1855.
On 17 June 1856 he was appointed a Supreme Court judge. Most of his time was presiding over equity cases.
On 17 January 1854 Molesworth, as acting Solicitor-General, was nominated to the Victorian Legislative Council, a position he held until the original Council was abolished in March 1856. In 1875, he travelled in New Zealand with Hugh Finn.
This was his only time out of the country since his initial arrival.
He retired as a judge on 1 May 1886, being succeeded by George Webb, and died in Melbourne on 18 October 1890, he was buried in Kew Cemetery.