Names
| Name | Total | Name | Total | Name | Total | Name | Total | Name | Total |
|---|---|---|---|---|---|---|---|---|---|
| Dál Cais | 4 | Darcy | 14 | Descamps | 1 | Dixon | 18 | Draycott | 10 |
| Dál Riata | 9 | Davidenko | 8 | Despenser, le | 15 | Domfront, de | 1 | Drayton | 3 |
| Dál Riatal | 1 | Davies | 1 | Devereux | 3 | Dommart, de | 1 | Dreux | 4 |
| Dalassena | 2 | Day | 1 | Devon | 2 | Donjon, de | 2 | Dublin | 7 |
| Dalassenos | 1 | Deheubarth | 5 | Deyncourt | 4 | Doukaina | 1 | Dunkeld | 1 |
| Dale | 4 | Déis Tuaiscirt, In | 5 | Dijon | 1 | Doukas | 3 | Dunstanville | 2 |
| Dammartin | 3 | Déisi | 4 | Dillingen | 1 | Dourton | 2 | Durham | 2 |
| Daneys | 1 | Dene | 5 | Dinan, de | 2 | Dover | 3 | Durward | 2 |
| Danvers | 7 | Denys | 6 | Dinefwr | 5 | Down | 1 | Dyfed | 22 |
| Dapifer | 2 | Dependen, de | 1 | Dinham | 3 | Downing | 29 | Dyffrin Clwyd | 2 |