The surname Tretheway originates from Cornwall, a county in the south-western peninsula of England. The name dates back to the 13th century and is derived from the Cornish words "tre" meaning homestead or settlement, and "hywey" meaning road or path. It is believed to have originated as a locational name, referring to someone who lived near a particular road or path.
One of the earliest recorded instances of the name Tretheway can be found in the Cornish Subsidy Rolls of 1327, where a certain John Tretheway is mentioned. The name also appears in various medieval records and documents from Cornwall, such as the Assize Rolls of the 13th and 14th centuries.
In the 16th century, the name Tretheway was sometimes spelled as "Trethewey" or "Trethewaye." During this period, a notable figure bearing this surname was John Tretheway (c. 1510-1582), an English merchant and Member of Parliament for Tregony, Cornwall.
In the 17th century, the Tretheway family was well-established in various parishes across Cornwall, including St. Mabyn, St. Columb Major, and St. Issey. One prominent individual from this era was Nicholas Tretheway (1638-1688), a Cornish clergyman and author who wrote several religious works.
The 18th century saw the migration of some Tretheway families to other parts of Britain and beyond. In 1796, Richard Tretheway (1772-1857) was born in Cornwall and later became a prominent merchant and shipowner in Newfoundland, Canada.
As the 19th century dawned, the Tretheway name continued to be found across Cornwall, as well as in other parts of England and the British Empire. One notable figure from this period was John Tretheway (1819-1899), a Cornish artist and landscape painter who specialized in depicting scenes of rural Cornwall.
Other notable individuals with the surname Tretheway include George Tretheway (1858-1935), a Canadian businessman and politician who served as a member of the Legislative Assembly of British Columbia, and Natasha Tretheway (born 1966), an American poet who served as the 19th Poet Laureate of the United States from 2012 to 2014.