Swyncombe is a hamlet and large civil parish in the high Chilterns, within the Area of Outstanding Natural Beauty about 4+1/2mi east of Wallingford, Oxfordshire, England. Swyncombe hamlet consists almost entirely of its Church of England parish church of Saint Botolph, the former rectory and Swyncombe House. The population of the parish is in the hamlets of Cookley Green and Russell's Water, and the scattered hamlet of Park Corner. The 2011 Census recorded the parish's population as 250. It is partially forested and is the fifth largest of 87 civil parishes in the District.ManorSwyncombe's toponym is derived from the Old English words Swin for wild boar and combe for valley or hollow.After the Norman conquest of England the manor of Swyncombe was granted to the Norman Miles Crispin, the first castellan of Wallingford Castle. The Domesday Book records that by 1086 he had granted it to Gilbert Crispin, a monk who in 1085 was made Abbot of Westminster.