[1] Wisdom was born in Blackburn, Lancashire, England, and arrived in Australia in 1834 with his parents, moving to Morpeth in the Hunter Valley.
[13] After declining numerous offers of ministerial positions,[14] he agreed to be Attorney General in the Third ministry of Sir Henry Parkes from August 1879 to January 1883.
[2][15] He personally prosecuted the Watabadgery bushrangers, Captain Moonlite and Thomas Rogan, which drew praise from the Bulletin for his forensic skills.
[1] He was appointed to the Legislative Council in February 1887, shortly before leaving for England with Sir Patrick Jennings as one of the delegates of New South Wales, to the first Colonial Conference.
[2] Returning to New South Wales as Sir Robert, he did not take his seat in the Legislative Council before he died on 16 March 1888(1888-03-16) (aged 58).