The donation of Sancho García Historical milestone · Cillaperlata, Las Merindades, Burgos Image of Cillaperlata, not of the place itself. The name of the place appears for the first time in 1011, when the Castilian count Sancho García donates it to the monastery of San Salvador de Oña with the formula Cella perllata, cum integritate. The place name goes back to the Latin cella, cell or cave. 1011 Photo: Maragm (CC BY-SA 3.0) What to see and do in Cillaperlata