Allsup
A likely English surname that began as a place-based or nickname-style name, with its exact origin still uncertain.
The #9,515 most common surname in the United States (2010 Census) — about 1 in every 90,382 Americans shares it.
Etymology
Allsup is generally treated as an English surname, but its exact derivation is not firmly established. It may be a reduced or altered form of a local place name or an older personal-name-based form that became fixed as a surname. The ending -up can occur in several English surnames and place names, so the name is best regarded as of uncertain medieval origin rather than one with a single secure meaning.
History
The surname appears mainly in England and later in the English-speaking world, including the United States. As with many uncommon English surnames, spellings could shift over time, which likely explains the modern Allsup form. Because the origin is uncertain, there is no single well-attested historical bearer or migration story that defines the name.
Origin
Regions
Variant spellings
Fun fact
Modern spellings such as Allsup and Allsop are often treated as related forms, showing how surnames could drift in spelling before standardization.