At Málaga's church of San Juan on 20 August 1770, Juan Berman, native of the town of Castar or Castur 'in the Kingdom of England, having joined our Holy Mother Church', the son of Francisco Berman and María Berman, was married to María Ana de Arenas, daughter of Francisco de Arenas and Teresa García, natives of Málaga.
I assume the English family's original names would have been John Berman, Francis Berman and Mary _____ ; Castor near Peterborough seems one possible place of origin for them, though there may be others.
SOURCE: Archivo Histórico Diocesano de Málaga, parish of San Juan, Marriages 1769-1780 (Legajo 462), P. 35 v.