Gilliland
A Scottish and Irish surname most likely built from a Gaelic personal name plus a place- or land-related element, with several close spelling variants in historical records.
The #2,698 most common surname in the United States (2010 Census) — about 1 in every 23,125 Americans shares it.
Etymology
This surname appears in historical name lists alongside forms such as Gillilan, Gilfilland, and Gilfinnan, suggesting a Gaelic base name beginning with Gil- or Gille-, the common prefix meaning "servant" or "devotee." The second element is less certain, but it likely reflects a place-name or a reduced form of a Gaelic personal name rather than the modern English word "land" taken literally. Because the old sources here are only incidental mentions, the exact original form cannot be fixed with confidence.
History
Gilliland is especially associated with Scotland and later Ulster, where many Scottish and Irish surnames were carried by migration and settlement. The name survives in several spellings, and historical indexes often group Gilliland with related forms such as Gillilan and Gilland. In modern usage it is established in both Ireland and the United States, where it spread through emigration.
Origin
Regions
Variant spellings
Fun fact
Historical surname indexes often cross-list Gilliland with a cluster of similar Gaelic names, which is a clue that spelling was especially fluid before standardization.
From the historical record
“land, MacLeland, GilfiUan, Gilfilland, Kilfillan, Gillilan, Gilliland, Gellan, Gelland, Gleeland, Glelland, Leland, etc. mAC 510IIA -j^eAtigA, Macll- hargy.”
— Sloinnte Gaedheal is Gall: Irish names and surnames