Washington

wiktionary

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Washington (the town in Tyne and Wear, northeast England): probably from the Old English place name Hwæssingatūn(literally “a settlement of the household of Hwæssa”), from Hwæssa(a Saxon chieftain's name) +‎ -ing(“belonging to”) +‎ tūn(“homestead, settlement”). It was attested in 1096 as Wasindone. Hwæssa is of uncertain origin, said to possibly correspond to waþ(“hunt”) + sige(“victory”) [1], or possibly related to hwæte(“wheat”). There are other theories; more at Washington.

The surname derives from the town, and most places in the United States are named for George Washington.

etymonline

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Washington

U.S. capital, founded 1791, named for President George Washington (1732-1799); the family name is from a town in northeastern England, from Old English, literally "estate of a man named Wassa." The U.S. state was named when it was formed as a territory in 1853 (admitted to the union 1889). Related: Washingtonian.