Lydon
An Irish surname, usually understood as a variant form related to Lydane/Liddane-type names from Gaelic roots.
The #8,103 most common surname in the United States (2010 Census) — about 1 in every 75,469 Americans shares it.
Etymology
The surname Lydon is treated in older Irish surname scholarship as part of a cluster that includes Liddane, Lydden, Leyden, and related forms. Those forms are generally traced to Gaelic roots rendered in imperfect or varying spellings by English-speaking clerks. The exact original Gaelic form behind Lydon is not securely established from these excerpts alone, so the name is best treated as an Irish surname with an uncertain precise derivation.
History
The name is found in Irish surname lists and appears in county-based records in the 19th-century scholarship, including Fermanagh. Woulfe grouped Lydon with several variant spellings, suggesting a shared or overlapping Irish origin rather than a single fixed English spelling tradition. In modern usage it survives chiefly as an Irish surname, especially in diaspora communities.
Origin
Regions
Variant spellings
Fun fact
Older surname dictionaries often list Lydon alongside several similar-looking names, which is a clue that spelling was quite fluid before modern standardization.
From the historical record
“6 Lio-OAin Liddane, Leddan, Lydden, Lyden, Lydon, Ley- den, etc. C tionACAin, Lenaghan, Lena- han, Lenihan, Lennihan. 6 tioriAin, Lenane, Lannan,”
— Sloinnte Gaedheal is Gall: Irish names and surnamesNotable people named Lydon
- John Lydon (b. 1956)
Sourced from Wikidata; linked to their Wikipedia page.