What is "iffley"

Iffley is a village in a designated Conservation Area in Oxfordshire, England. It lies within the boundaries of the city of Oxford, between Cowley and the estates of Rose Hill and Donnington, and in proximity to the River Thames ( Isis). A notable feature is its original and largely unchanged Norman church, St Mary the Virgin, which has a modern stained glass Nativity window designed by John Piper. The church is listed Grade I.