[3] He was educated at Trinity Hall, Cambridge from 1775 to 1777 and also entered Lincoln's Inn to study law in 1775.
[3] He was brought into Parliament by the 2nd Duke of Newcastle for Boroughbridge, and was expected to support Pitt's administration.
[3] In 1800 he succeeded his uncle, the eccentric Matthew Robinson, 2nd Baron Rokeby, in the barony and his estates.
[4] The barony had been created in 1777 for Lord Archbishop of Armagh Richard Robinson, the Lord Primate of All Ireland, who had also inherited the English baronetcy of his eccentric elder brother Sir Thomas Robinson, 1st Baronet.
He was unmarried, but had one illegitimate son, so was, therefore, succeeded in the barony by his younger brother, Matthew, an admirer of Pitt, who had adopted the surname of Montagu.