Halley
A surname with multiple possible origins, including an English local name and an Irish form of Ó hAille.
The #8,394 most common surname in the United States (2010 Census) — about 1 in every 78,302 Americans shares it.
Etymology
The surname Halley has at least two plausible origins. In English use, it appears to be a locational name, likely meaning someone from a place called Halley or a similar lost or minor place-name; one 19th-century source specifically treats it as local and suggests Derbyshire may have been an early home area. In Irish use, it is also recorded as an Anglicized form of Gaelic surnames such as Ó hAille, a patronymic from a personal or byname form built on ail/aille-related elements.
History
The name is found in both English and Irish surname traditions, which makes its history a little tangled. In English records it is comparatively uncommon and seems to have been concentrated in particular localities. In Irish surname studies it appears among anglicized forms grouped with other Ó h- names, showing that the same spelling could arise independently in different places.
Origin
Regions
Variant spellings
Fun fact
The same spelling could represent either a purely English place-based surname or an Irish Gaelic surname that was later Anglicized, so family history is especially important for telling the two apart.
From the historical record
“HicnacL Comhili, p. 75. ■ Tgo. Married -Timothy Halley and Catherine Winnell : St. Geo. Hu. Sq. '^adoB,4; NewYoril.S. HaUgartli,HAl«nrth.-~Local,”
— A Dictionary of English and Welsh Surnames, with special American instances