Name of Place: Osyth Saint; County: Essex; Number of Miles from: Colchester – 12; Manningtree – 12; Harwich – 15; Dist. Lond. – 63; Population: 1583.
Osyth, Saint, or Chich. This place receives its name from a daughter of Redwald, King of East Anglia, who was murdered by the Danes. She founded a nunnery here, which afterwards became a priory of Augustine Canons, the remains of which building are very noble and impressive.
Source: England and Wales Delineated by Thomas Dugdale assisted by William Burnett; published by Tallis & Co., Green Arbour Court, Old Bailey, 1835.