This was Rhodri Mawr, or Roderick the Great, a name always cherished in Cymric annals.
Henry at first tried to be suzerain without displacing the natives, and received the homage of Roderick O'Connor, the high king.
He added also to their chiefships, and on the 1st of April hoisted the British flag, made a new treaty with Mwanga, and sent Major Roderick Owen to enlist 400 Sudanese from the Toro colonies.
He early attracted the notice of Sir Roderick Murchison, through whom he was appointed surgeon and naturalist to the Niger expedition sent out in 1854 by Macgregor Laird with government support.
Sir John Barrow, Sir John Cam Hobhouse (Lord Broughton), Sir Roderick Murchison, Mr Robert Brown and Mr Bartle Frere formed the foundation committee of the Royal Geographical Society, and the first president was Lord Goderich.