Mount Mills

[Mount Mill.] There were windmills on the west side of Coppice Row (Farringdon Road), while just outside the parish [Clerkenwell], on the east side of Goswell Road, the raised ground level of another and the name Mount Mill survive.

Mount Mill. East of Goswell Street, at the north end. A battery and breastwork was built here in fall of 1642 as part of the defences erected by order of Parliament around the city and suburbs of London during the Civil War.

In 1665 the area was used for a plague pit, as described by Defoe:

The distemper sweeping away such multitudes, as I have observed, many if not all the out-parishes were obliged to make new burying-grounds.... [including] A piece of ground beyond Goswell Street, near Mount Mill, being some of the remains of the old lines or fortifications of the city, where abundance were buried promiscuously from the parishes of Aldersgate, Clerkenwell, and even out of the city. This ground, as I take it, was since made a physic garden, and after that has been built upon.
—A Journal of the Plague Year, 1722