Rosson
Rosson is most likely an English surname formed as a variant of Ross, with the ending -on added in later spelling or dialectal development.
The #8,006 most common surname in the United States (2010 Census) — about 1 in every 74,739 Americans shares it.
Etymology
The available evidence points to Rosson being a later form related to Ross, rather than a completely separate surname. The ending -on may reflect dialect spelling, pronunciation, or an attempt to expand an older short form. If connected with Ross, the deeper root is likely the old word for “red” or “ruddy,” though the exact pathway is not certain.
History
The surname is attested in English-speaking records and has the feel of a surname that developed from an earlier Ross form through local pronunciation or spelling variation. The name appears in the United States in modest numbers, but it remains relatively uncommon. Because the historical evidence is thin and the source excerpt is damaged, the exact origin should be treated cautiously.
Origin
Regions
Variant spellings
Fun fact
The cited historical note suggests Rosson may be linked to an older form of Ross, illustrating how surnames often changed shape through speech and spelling rather than by formal redesign.
From the historical record
“Ross Nofse horSy k 7'oss. Hots is RossoN probably formed by meta- EosKELi J thesis from hros, which seems to be the older form, and to be connected in its root with race, nisb, rash, (of which last the original sense was simply " quick.") The”
— English Surnames, and their place in the Teutonic family