Derek and Petra Searle

Derek John Hatherall Searle and Petra Leay Searle are a British couple known for surveying British [Overseas Territories] and Antarctica in the mid-20th Century. Derek, a photographer and map librarian worked on the Falkland Islands and Dependencies [Aerial Survey Expedition], and Petra worked for Ordnance [Survey International], mapping South Georgia.
The Leay Glacier off the coast of Graham Land, Antarctica is named after Petra. Mount Searle on Antartica's Horseshoe Island is named after Derek.