Adopted 4 April 1950 as labelled on British Admiralty Chart 580, 1862 et seq, and on BC map 2D, 1923.

Source: BC place name cards, files, correspondence and/or research by BC Chief Geographer/Geographical Names Office.

Identified as "Pendril Sound" in 1888 NW Coast of America Pilot, p.188.

Source: BC place name cards, files, correspondence and/or research by BC Chief Geographer/Geographical Names Office.

"Named after Alfred Penderill [sic] Waddington (1801-1872), who in 1862 established the mule trail from the head of Bute Inlet up the Homathko River into the Chilcotin, where it joins the Bentinck Arm-Alexandria trail. It was Waddington's idea that the transcontinental railway should follow the mule trail to Bute Inlet, cross to Vancouver Island and terminate at Victoria." [note: numerous PABC files about Waddington omit his middle name, with the exception of the above entry, in A.G. Harvey's place names file. It is generally understood that "Pendrell" is the correct form of Waddington's middle name. Further note: all other accounts indicate that Waddington was 76 when he died in 1872, ie. he was born in 1796, not 1801.

Source: Provincial Archives' Place Names File (the "Harvey File") compiled 1945-1950 by A.G. Harvey from various sources, with subsequent additions