noun
- Arnold J(oseph),1889–1975, English historian.
noun
- Arnold 1852–83, British economist and social reformer, after whom Toynbee Hall, a residential settlement in East London, is named
- his nephew, Arnold Joseph . 1889–1975, British historian. In his chief work, A Study of History (1934–61), he attempted to analyse the principles determining the rise and fall of civilizations