Castañon
A Spanish surname most likely tied to a place-name or topographic term related to chestnut trees.
The #4,623 most common surname in the United States (2010 Census) — about 1 in every 40,238 Americans shares it.
Etymology
Castañón is a Spanish surname, and the spelling Castanon is usually a simplified form without the tilde. It is generally understood as deriving from castaña, meaning "chestnut," ultimately from Latin castanea. The name may have referred to someone who lived near chestnut trees or a place associated with them, or to a local place-name built from the same root.
History
The surname is found in Spanish-speaking regions and in the Spanish diaspora, especially in the Americas. Like many Iberian surnames, it likely began as a local or descriptive name before becoming hereditary. In some cases, English-language records dropped the tilde, producing Castanon instead of Castañón.
Origin
Regions
Variant spellings
Fun fact
The spelling change from Castañón to Castanon is common in records that do not use the Spanish letter ñ.