Claimants
- D'Alton
- D'Arcy
- D'Esterre
- D'Vine
- Dagg
- Dagge
- Dalby
- Dale
- Dalgety
- Dallaghan
- Dalton
- Daly
- Danaher
- Daniels
- Darcy
- Dargan
- Darley
- Darling
- Darmody
- Dart
- Davenport
- Davidson
- Davidson Griffith
- Davies
- Davin
- Davis
- Davitt
- Davy
- Dawson
- Day
- De Biemme
- de Courcy
- de la Croix
- de Lacy Smyth
- de Martelaere
- de Monge
- de Selby
- de Vere Welchman
- Deane
- Dease
- Deegan
- Degidon
- DeGroot
- Delacambre
- Delahunt
- Delaney
- Delany
- Delrenne
- Dempsey
- Deneeffe
- Dennis
- Denver
- Denvir
- Derham
- Devany
- Deverell
- Devereux
- Deverill
- Devin
- Devine
- Devlin
- Devoy
- Dewar
- Dickenson
- Dickie
- Dickinson
- Dickson
- Digby
- Dignam
- Dillon
- Dilworth
- Dinan
- Dinette
- Dinneen
- Dix
- Dixon
- Dobbie
- Dobbin
- Dobbs
- Dobbyn
- Dobson
- Dockeray
- Dockery
- Dockrell
- Dodd
- Dodrill
- Doggett
- Doherty
- Dolan
- Dollard
- Domenico
- Domican
- Donaghy
- Donaldson
- Donas
- Dondon
- Donegan
- Donnellan
- Donnellon
- Donnelly
- Donoghue
- Donohoe
- Donovan
- Doogue
- Dooley
- Doolin
- Doran
- Dorrington
- Douglas
- Douglas Brown
- Dover
- Dowdall
- Dowling
- Downe
- Downes
- Downey
- Downs
- Doyle
- Doyle Penrose
- Drago
- Drea
- Drew
- Dreyer
- Drimmie
- Duane
- Dudgeon
- Duff
- Duff Gillespie
- Duffy
- Duggan
- Dullwood
- Dunbarr
- Duncan
- Dunn
- Dunne
- Durdin
- Durkin
- Durnan
- Dwane
- Dwyer
- Dyas
- Dyson Swayne