The area that became Bozrah was first settled as part of the original "nine-miles-square" of Norwich as well as part of the Parish of West Farms. The area became its own parish, called "New Concord" or the "Fourth Society of Norwich", in 1737.
The community, according to the legend, really wanted to call itself "Bath" after the famous spa in England. The local man chosen to carry the parish's request to Hartford had a somewhat eccentric manner of dress, however, and when he appeared before the Legislature he was dressed in loud, particolored homespun so odd as to bring to the mind of one amused legislator the query of Isaiah 63:1: "Who is this that cometh from Edom, with dyed garments from Bozrah?" Overcome by the humorous appropriateness of this verse, the Assembly decided to name the town "Bozrah" when it incorporated the place.
View additional information on the Bozrah Wikipedia page