Spanish composer and organist. [...] The many compositions - keyboard works, villancicos, chanzonetas, motets and sainetes (theatre music) - mentioned by Pacheco, his first biographer, are no longer extant. The identity of the Pedraza or Peraza who composed a single surviving organ piece superscribed Medio registro alto, Tono I (divided keyboard, 1st mode) [...] has been disputed.
Source: Robert Stevenson: Francisco de Peraza quoted from Grove Music Online accessed 31 January 2010
Complete article (requires subscription).