First, in terms of composers: Henry Purcell is at the core of the English Baroque. Prior to Purcell, you have figures like John Blow who I believe taught Purcell. read more
This is a genre that was popular in the English renaissance and early baroque(which for the english was still the renaissance), with William Byrd, Orlando Gibbons, William Lawes, and some other high renaissance names. read more
In an effort to allow for this discrepancy, many baroque ensembles adjust their tuning to the repertoire being performed: a’= 415hz for late baroque music, a’=392hz for French music, a’=440hz for early Italian music and a’=430hz for classical repertoire. read more