In 1856 the explorer Richard Burton traveled to Bombay with his second in command Lt John Hanning Speke, in order to obtain leave for Lt. Speke from the Indian Army. There Burton engaged two Goans as traveling assistants. They were Valentine Rodrigues and Gaetano Andrade.
Mnamo mwaka 1856 mpelelezi Richard Burton alisafiri hadi Bombay akiwa na Luteni Kamanda wake msaidizi Bwana John Hanning Speke ili kupata kibali cha Luteni Speke cha kuacha jeshi India. Huko Burton aliwachukua wagoa wawili kama wasaidizi katika safari nao walikuwa ni Valentine Rodrigues na Gaetano Andrade.