Mervin

Mervin is an English form in the Welsh Merfyn and Mervyn family. The older name's meaning is uncertain: several explanations have been proposed for its elements, including connections with marrow or the sea. The name itself has a stronger historical record than any single English translation of it.

Merfyn Frych, a ninth-century king of Gwynedd, gives the family a documented place in medieval Welsh history. The change from Welsh f to English v also reflects the sound that the Welsh letter represents, rather than an unrelated new name. Mervin uses i where Mervyn uses y, offering another established spelling to compare. For parents revisiting a family name, the Welsh history adds a substantial story even while the oldest literal meaning remains open.