_Dalby._ _Dál_, a dale, a valley; _bý_, a habitation. A valley-home.
_Darby._ Common name for _Diarmoid_ in Limerick and Tipperary. See
Dermod, page 23.
_Darcey._ _Dearc_, or _deorc_, dark, dusky; _ig_, an adjective
termination. Dark; dusky.
_Darkis._ _Dearc_, dark; _isc_, an adjective ending. Darkish; dusky.
_Darling._ _Deór_, dear; _ling_, a termination denoting state or
condition of a person. A person that is dear, or beloved.
_Darlington._ _Darling_, Darling; _tán_, house. Home of Darling.
_Darley._ _Deór_, dear; _líc_, like. Dear-like; dearly.
_Davidson._ _David_, Hebrew for “beloved;” _sun_, son. Son of David.
Davids, a contracted form of the name.
_Davies._ _Davie_, Scotch for the Hebrew for “beloved;” _s_ for _sun_,
son. Son of Davie. Davieson, unabbreviated name, and Davis, a contraction
thereof.
_Daw._ _Dæg_, a day; _dawe_, Old English for the same. Day, of like
kinship.
_Dawson._ _Daw_, Daw; _sun_, son. Son of Daw.
_Deacon._ _Deacon_, or _diacon_, a deacon, a levite.
_Deane._ _Deane_, the Danes: so called from _dene_, a valley, a plain,
for they are dwellers in a vale or plain. _Dean_, as commonly applied, is
the same as _deacon_, a levite.
_Denison._ _Denis_, French of the Greek _Dionysos_, god of Nysos; _sun_,
son. Son of Denis.
_Denn._ _Den_, a valley, a plain.
_Derby._ _Deór-bý_, from _deór_, a deer, a beast, and _bý_, a habitation.
A deer-park.
_Dilg._ _Dilge_, present indicative of _dilgian_, to destroy.
_Donald._ Ir. _Donghal_, from _donn_, brown, and _gall_, stranger.
Brown-haired stranger.
_Donaldson._ _Donald_, Donald; _sun_, son. Son of Donald.
_Donnell._ Ir. _Domhnall_, possibly _Donghal_, from _donn_, brown, and
_gall_, stranger. Brown-haired stranger.
_Donaghy._ Ir. _Donoghoc_, from _Donnachu_, which is from _donn_, brown,
and _neać_, an individual, an agent. A brown-haired chief. Donnogh,
Donahoe, Donahue, Donohoe, Donohue, from the same roots.
_Douglass._ Ir. _dhu_, from _dub́_, black, dark; _glas_, green, gray.
Dark green; dark gray.
_Dugall._ Ir. _dhu_, from _dub́_, black; _gall_, a stranger. A black
stranger. Dugald, from the same roots.
_Downes._ _Dúnes_, genitive of _dún_, a mountain, a hill. Belonging to a
hill.
_Douney._ _Dún-ig_, from _dún_, a mountain, a hill, and _ig_, an
adjective ending. Mountainous; hilly. Downy, from the same derivation.
_Durburrow._ _Dur_, a door, a gate; _beorh_, a burrow, a place of burial.
A door-burrow; a place of burial entered by door, or gate. Durborrow,
Durborow, cognate terms.