Isabelle Ostertag's research interests lie in English medieval architecture, lay piety, and Marian devotion. Her dissertation will focus on what a comparison of parish Lady Chapels - and their associative architecture, location, material culture, social space—reveals about how Marian devotion spread among lay people during the medieval period. The primary aim of this project will be to present a more holistic analysis of medieval lay piety and devotion towards the Virgin Mary through the case study of parish Lady Chapels in East Anglia.