No Deravin households in Griffith's.
| Derivan | Very rare: Roscommon etc. See Dervan. |
| Dervan | Quite numerous: Connacht, Dublin. Ir. Ó Doirbhín (SGG); Ó Doirbheáin, Ó Dearbháin, (MacLysaght, who considers the latter most accurate: dearbh = certain). MIF. |
| Derwin | rare: Dublin etc. See Dervan. |
| Ó Doirbhín | Dervan, Dervin: líon beag: Connachta. Bheadh Ó Dearbháin níos cruinne dar le Mac Giolla Iasachta ach tugann de Bhulbh: doirbh = doicheallach. MIF. |
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