This narrow City of London pedestrian laneway, which runs south from King William Street to Cannon Street, bears the name of the Church of St Swithin London Stone.

The medieval church, which was rebuilt after being destroyed in the Great Fire of London only be badly damaged in the Blitz and finally demolished in 1962, was located on the corner of the laneway’s intersection with Cannon Street.

St Swithin (also known as St Swithun) was a ninth century Bishop of Winchester while the other part of the church’s moniker – London Stone – comes from the fact the ancient stone was formerly located opposite the church.

The church was the resting place of Catrin Glyndŵr, wife of the rebel Edmund Mortimer and daughter of Welsh leader Owain Glyndŵr, who, after being held in the Tower of London, died in mysterious circumstances (there’s a memorial to her in a garden on the former site of the church).