Original source material relating to Staunton (nr. Newent), and other parishes in Diocese of Gloucester may be found at the Gloucestershire Archives; with the exeception of Bishops Transcripts, which (if they exist) should be found at Worcestershire Record Office.
"Rectory, united with Corse since 1952. Gloucester Diocese. Transferred [to Gloucestershire] from Worcestershire, 1931." (Ref: Guide to the Parish Records of the City of Bristol and the County of Gloucester; I. Gray & E. Ralph, 1963)