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Merwyn

♂ Boy

How to Pronounce Merwyn

Pronounced MUR-win /ˈmɜːr.wɪn/High

Meaning: Merwyn is a -wyn spelling of Merwin or Marvin. The name traces to the Welsh Merfyn or the Old English elements 'maer' (famous) and 'wine' (friend), giving 'eminent friend', and it overlaps with Marvin, often read as 'sea friend'.Low

In 30 seconds: Merwyn respells Merwin or Marvin — 'eminent friend' or 'sea friend' — with a Welsh-looking -wyn (said 'MUR-win').

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Origin LowWelsh, English

MeaningMerwyn is a -wyn spelling of Merwin or Marvin. The name traces to the Welsh Merfyn or the Old English elements 'maer' (famous) and 'wine' (friend), giving 'eminent friend', and it overlaps with Marvin, often read as 'sea friend'.

U.S. rank (1971)#4740 ↘ Falling

1971 U.S. births6 boys (0.00% of U.S. boys)

Peak year1937

Total births (all-time)≈ 786

Popularity in the U.S. · SSA data

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Merwyn is a variant of Merwin or Marvin, names that reach back to the Welsh Merfyn and to Old English 'maer', famous, plus 'wine', friend — 'eminent friend'. The Marvin branch is often glossed 'sea friend'. The -wyn spelling simply gives the old name a more Welsh silhouette.

As a given name it was a rarity, cresting faintly in the late nineteen-thirties and fading by the nineteen-seventies alongside the once-common Marvin. It reads as a mid-century grandfather name and has not returned.

Did you know? The -wyn ending, from the Welsh and Old English word for 'friend' or 'fair', gives Merwyn a bardic, Celtic look even though the name saw most of its use in plainspoken mid-century America.

Overall data confidence 50%

References — Merwin / Marvin — Merwyn = variant of Merwin/Marvin; Welsh/Old English 'eminent friend'

Variations

MerwinMarvinMervyn

Nicknames

Merv

Famous Bearers

Famous bearers coming soon.

If you like Merwyn…

Marvin— the common name Merwyn overlaps with

Mervin— a near-identical spelling of the same name

Merlin— a fellow Mer- name with Welsh coloring

Melvin— another mid-century -vin boys' name of the era

Explore names like Merwyn

By themerare vintage welsh

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Frequently Asked

What does the name Merwyn mean?

Merwyn is a form of Merwin or Marvin, meaning 'eminent friend' or 'sea friend'.

How do you pronounce Merwyn?

It's said MUR-win /ˈmɜːr.wɪn/ — two syllables, stress on the first.

Is Merwyn a boy or girl name?

Merwyn is used as a boy's name.

How popular is Merwyn?

Merwyn has always been rare, a vintage variant most seen in the mid twentieth century.