English and Irish: from Middle English duk(e) ‘duke’
(from Old French duc, from Latin dux, genitive
ducis ‘leader’), applied as an occupational name for someone
who worked in the household of a duke, or as a nickname for someone
who gave himself airs and graces.
English and Irish: possibly also
from the personal name Duke, a short form of Marmaduke,
a personal name said to be from Irish mael Maedoc ‘devotee
(mael, maol ‘bald’, ‘tonsured one’) of Maedoc’, a
personal name (M’Aodhóg) meaning ‘my little Aodh’,
borne by various early Irish saints, in particular a 6th-century abbot
of Clonmore and a 7th-century bishop of Ferns.
Scottish:
compare the old Danish personal name Duk (Old Norse
Dukr).
In some cases, possibly an
Americanized form of French Leduc or Spanish Duque.
Possibly an Americanized spelling of Polish Duk, a
nickname from dukac ‘to stammer or falter’.
Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4
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