Gilley
A surname with overlapping Cornish and Gaelic-looking roots, sometimes tied to place-names and sometimes to names built from “gille” meaning “servant” or “lad.”
The #3,593 most common surname in the United States (2010 Census) — about 1 in every 31,168 Americans shares it.
Etymology
The evidence points to more than one possible origin. In Cornish, it may be connected with place-names built from pen-gilly, meaning something like “head of the grove,” and forms such as Pengelly/Pengilly are related spellings in the same family of names. In Gaelic and Manx contexts, similar-looking surnames can come from giolla/gille, meaning “servant” or “youth,” especially in older names beginning Mac Gille-.
History
The name appears in records of several Celtic surname traditions, which makes a single origin hard to assign for every family. In Cornwall, it fits the pattern of surnames taken from local place-names; in Manx and Scottish usage, it can reflect Gaelic personal-name formations that were later shortened or reshaped. Modern Gilley families may therefore have different ancestral routes depending on region.
Origin
Regions
Variant spellings
Fun fact
The same historical sources that mention Gilley also link it with Penguin-like Cornish forms such as Pengelly and Pengilly, showing how a surname can survive in several closely related spellings.
From the historical record
“PENGELLY, PENGELLEY, PENGILLY, PEN- GILLEY, PENGILLAY, PENGULLY. From Pen- gelly in Blisland, Pengelly in St. Teath, or Pengilly in Creed ; from pen-gilly, -g^Hy^ the head of the grove. PENGLAZE, PENGLASE. From Penglaze in Crowan, or Penglaze in Kenwyn ; from pen-glase, -glaze^ the green head or promontory.…”
— Patronymica Cornu-Britannica; or, the etymology of Cornish surnames