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Forbes Name Meaning
Scottish: habitational name from a place near Aberdeen, so named from Gaelic forba ‘field’, ‘district’ + the locative suffix -ais. The place name is pronounced in two syllables, with the stress on the second, and the surname until recently reflected this. Today, however, it is generally a monosyllable.
Irish: reduced Anglicized form of Gaelic Mac Firbhisigh ‘son of Fearbhisigh’, a personal name composed of Celtic elements meaning ‘man’ + ‘prosperity’. A family of this name in Connacht was famous for its traditional historians, compilers of the Book of Lecan.