The surname Gilliam is of English origin. It is derived from the personal name William, which itself has roots in the Old High German name "Willahelm," meaning "will" or "desire" combined with "helmet" or "protection." Over time, this name evolved through various forms and was anglicized to Gilliam. The surname is relatively common and has been carried by many individuals across different regions, particularly in English-speaking countries.
Among the more modestly common last names, Gilliam holds rank #1204 and is used by 29414 people across the U.S., equaling 10 per 100,000.
Our database contains over 6240 people with the last name Gilliam. This surname is most commonly found in Texas, Tennessee, Louisiana. We have over 6 unique first names combined with the last name Gilliam in our records. The most frequent first names associated with this surname are James, Michael, John.
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