Archer Peak ( ) is a peak, 110 m high, on the southwest extremity of Possession Island, Antarctica. It was named by the British Antarctic Expedition, 1898–1900, either for A. Archer, Esq., of Australia, mentioned in the preface to Carsten Borchgrevink's "First on the Antarctic Continent", or for Colin Archer who designed Borchgrevink's vessel, the SS "Southern Cross".
They definitely know who Archer Peak was named for.
They do know who Archer Peak was named for.  The passage states it was either A. Archer, Esq., of Australia or Colin Archer.  So they do know who the Peak was named for.  The system was likely confused by the verbiage that was used.
( z1 know :ARG0 ( z2 they ) :ARG1 ( z3 name :ARG2-of ( z4 name :ARG1 ( z5 mountain :name ( z6 name :op "Archer" :op "Peak" ) ) ) ) :mod ( z7 definite ) )