Archivo Diocesano de Osma-Soria
Located in the charming town of El Burgo de Osma, this archive holds parish records vital to the genealogy of families from the province of Soria, as well as those of some towns located administratively in other provinces; also, many people married across diocesan boundaries, so one may find that – for example – a Guadalajara genealogy includes a sizable branch with its origin next door in Soria. Contact me to discuss possible research there.