Location: Croker Island and a small area of Cobourg Peninsula opposite the island and at Raffles Bay (originally two tribes that amalgamated before 1840). Jennison uses Margo. One native name for Croker Island is Mangulalgut, another is Margo.
Co-ordinates: 132°40'E x 11°10'S
Area: 300 sq. m. (800 sq. km.)
References: Earl, 1846, 1853; Sweeney, 1939; Capell, 1942; Berndt and Berndt, 1951, 1964; Elkin, Berndt and Berndt, 1951; Australian Encyclopedia, 1958.
Alternative Names: Yaako (['Ja:ko] = no), Terutong, Ajokoot, Marlgu, Marrgu, Ma:go, Margo (a native name for Croker Island), Margu (language name, fide Capell).