The Hebrew and Greek that is transliterated as «Gad» in English is translated in Spanish Sign Language with the sign for «tent,» signifying army tents that refer to Genesis 49:19. (Source: Steve Parkhurst)
«Gad» in Spanish Sign Language, source: Sociedad Bíblica de España
For more information on translations of proper names with sign language see Sign Language Bible Translations Have Something to Say to Hearing Christians .
More information on Gad (son of Jacob) and the Tribe of Gad .