There has been a consecrated church building on the site of St Mary's, Harrow on the Hill since 1094.
Allegra, daughter of Lord Byron, who attended Harrow School, is buried in an unmarked grave near the south porch.
Her father sought inspiration while a pupil from 1801-5 when lolling on the tombstone of John Peachey, an old Harrow resident.
A memorial in Byron's honour can now be visited at the Peachey stone.
A 1,000-year old skeleton was also found in the grounds of the church.
Award-winning Observer photographer Stuart Emmerson visited the grounds of the iconic Harrow landmark, St Mary's Church, to take these strikingly atmospheric pictures.
To find out more visit http://www.harrowhill.org .