The river was named after Captain Thomas Bannister who was the first European to discover the river in 1830 by Surveyor General John Septimus Roe in 1832.
The river was discovered by Thomas Bannister in 1830 and probably named by Governor James Stirling after Admiral Sir Henry Hotham.
Capt. Thomas Bannister and his party visited the inlet in 1831, although sealers had been based in the area since before 1826.
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