Family name origins & meanings
- English : habitational name from Dilworth, a place in Lancashire named from Old English dile ‘dill’ (a medicinal and culinary herb) + wor{dh} ‘enclosure’.
- Irish : English surname adopted by bearers of the Gaelic name Ó Dubhluachra ‘descendant of Dubhluachra’, a compound of dubh ‘black’ + luachair ‘rushes’.