| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 821 | Dwyer | Irish | Dark wisdom. | M | |
| 822 | Dyllan | Irish | Variant of Dillon: Loyal. | M | |
| 823 | Dyllon | Irish | Variant of Dillon: Loyal. | M | |
| 824 | Dymphna | Irish | Variant of Dympna: From the Irish name Damhnait, meaning fit or eligible. Famous bearer: The martyr St Dympna, patron Saint of the insane. | F | |
| 825 | Dympna | Irish | From the Irish name Damhnait, meaning fit or eligible. Famous bearer: The martyr St Dympna, patron Saint of the insane. | F | |
| 826 | Ea | Irish | Fire. | M | |
| 827 | Eachan | Irish | Horseman. | M | |
| 828 | Eachann | Irish | Horse-lover. | M | |
| 829 | Eadbard | Irish | Variant of Eadbhard: Rich protector. | M | |
| 830 | Eadbhard | Irish | Rich protector. | M | |
| 831 | Eagan | Irish | Fiery; forceful. | M | |
| 832 | Eagon | Irish | Fiery. | M | |
| 833 | Ealga | Irish | Noble. | F | |
| 834 | Eames | Irish | 'Prosperous protector.' Variant of Edmund. | M | |
| 835 | Eamon | Irish | Guardian. The Irish form of Edmund. Famous bearer: Irish statesman Eamon Dc Valera; Eamonn Andrews, presenter of the television programme 'This Is Your Life'. | M | |
| 836 | Eamonn | Irish | Variant of Eamon: Wealthy protector. | M | |
| 837 | Earc | Irish | Red. | M | |
| 838 | Earnan | Irish | Knowing. | M | |
| 839 | Eavan | Irish | Fair. | F | |
| 840 | Edana | Irish | Feminine form of Aidan: fire. | F | |