st.ann blackfriars churchyard, church entry, london

chunk of carved stone in graveyard, carved with scrolls, seemingly with stubs of mullions above and below. possibly from a great hall oriel ? now in graveyard on site of nave of blackfriars church, next to the north-south church entry, which was the walking place between the nave and choir of the friars church. their chancel became the church of st. ann, but was destroyed in 1666.