The mountain has two Irish language names: Magairlí an Deamhain and Binn Gharbh. The anglicized spellings Mogarlyandoon and Ben Garrif appear on some historical maps. Originally, it seems that Magairlí an Deamhain was the knobbly end of the mountain's northern ridge, while Binn Gharbh was the mountain as a whole. The English name Devilsmother may be "a euphemisticfalse translation" or may be based on an alternative name.