Because the peaks of Smith Island gave it a forked appearance when seen from a distance, American sealers in the 1820s called it Mount Pisgah Island after the double-topped Mount Pisgah in the town of Durham, CT. The name has since been restricted to the peak described.
Antarctic Digital Database (ADD). Scale 1:250000 topographic map of Antarctica. Scientific Committee on Antarctic Research (SCAR). Since 1993, regularly upgraded and updated.
^I.M. Howat, C. Porter, B.E. Smith, M.-J. Noh and P. Morin. Reference Elevation Model of Antarctica (REMA). Polar Geospatial Center. University of Minnesota, 2022 (Antarctic REMA Exlorer)