Gilliam is a surname of English origin that finds its earliest roots in the Norman French name Guillaume, the French equivalent of the Germanic personal name Wilhelm. The Norman influence was introduced into England following the Conquest of 1066, when the given name William rose to pre‑eminence across the country in tribute to William the Conqueror.

The Germanic elements that comprise Wilhelm are the word wil, meaning “desire” or “will”, and the word helm, meaning “helmet” or “protection”. Consequently, the surname Gilliam may be interpreted as “resolute protector” or “strong‑willed guardian”. These meanings reflect the character of the bearer in the context of medieval society, where the protection and resolve of individuals were highly valued.

Following the Norman Conquest, a number of surnames derived from William appeared in English records. The forms Gilham, Gillham, Gilliam, Gillam and Gillum all evolved from the Old French Guillaume. Early instances of these variations include Arnold Gilleme (1283, London), William Giliam (1379, Yorkshire) and Robert Gylham (1524, Suffolk). In 1676, the marriage of Elizabeth Gilham and Thomas Tyler was recorded at St. Martins in the Fields, London.

The earliest surviving spelling of the family name is found in the Calendar of Letter Books of the City of London, where a record of Peter Gillame dated 1276 appears. This attestation comes from the reign of King Edward I (1272‑1307), a period in which the use of surnames was becoming firmly established throughout England.

While the surname is predominantly English in provenance, it has also been borne in Wales and other parts of the British Isles. In Wales, the name is associated with the Welsh language and Christian tradition, indicating that the surname has been adopted by local populations in that region, although it remains derived from the same Norman French root that gave rise to the English form.

Typical given names associated with the Gilliam surname

Male

  • Andrew
  • Andy
  • Bill
  • Christopher
  • David
  • John
  • Mark
  • Michael
  • Nicholas
  • Paul
  • Peter
  • Richard
  • Robert

Female

  • Amy
  • Dorothy
  • Elvira
  • Emma
  • Kate
  • Laura
  • Margaret
  • Marilyn
  • Michelle
  • Nicola
  • Patricia
  • Sally
  • Sarah
  • Susan

Similar and related surnames

Related and similar names are generated algorithmically based on the spelling, and may not necessarily share an etymology.

How to communicate the surname Gilliam in...

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There are approximately 501 people named Gilliam in the UK. That makes it one of Britain's least common surnames. Only around eight in a million people in Britain are named Gilliam.

Surname type: From given name or forename

Origin: Celtic

Region of origin: British Isles

Country of origin: Wales

Religion of origin: Christian

Language of origin: Welsh

The Genealogist - UK census, BMDs and more online

Famous people named Gilliam

  • Terry Gilliam - American-born British screenwriter, film director, animator, actor and member of the Monty Python co

Names and descriptions courtesy of Wikipedia, and may contain errors. This is not intended to be an exhaustive list of every famous person with this name.

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