Du [042100] Duberley Duce Duck Ducker Duckett Duckfurd Duckham Duckinfield Duckworth Duckwurth Ducwurth Dudley Dudman Duell Duff Duffey Duffield Duffin Duffy Dugdale Duggett Duggin Dugmore Duguid Duke Dukenfeild Dukes Dukysbury Duley Dulson Dumont Dumvile Duncan Dundas Dunderdale Dune Dunford Dungate Dungey Dunham Dunhaven Dunhill Dunican Dunkley Dunlea Dunlop Dunn Dunne Dunne-Rowlands Dunnett Dunsmore Dunstan Dunton Dupernex Dupré Duprey Durant Durell Durham Durkin Durling Du Rose Durrant Dury Dussumier Dutch Dutheridge Duthie Dutton Duxbury