St Mary's Church, Amersham. St Mary’s Old Amersham dates from around 1140 A.D. though the site has been a holy one for much longer, as it stands where Roman Road crosses the little River Misbourne. The missionary monks of St Augustine and indeed earlier evangelist Bishops would baptise their converts at just such a location. As the town expanded during the middle ages, the church was extended, widened and heightened, much work being done in the 14th and 15th century, when the building came to look much as it does today. In the early 16th Century, King Henry VIII sanctioned the persecution of the Lollards, early Protestants, and a number of unrepentant townspeople, now known as the Amersham Martyrs were burned on the hill overlooking the town. Important visitors include John Knox, who preached his last sermon here before fleeing abroad from the wrath of Queen Mary, Oliver Cromwell, who parked his wife for safe keeping at Woodrow High House, just outside the town, Richard Baxter, the Puritan Divine who described a disputation with Parliamentary soldiers during the Civil War, and William Penn, walked over from Penn Village to court his second wife Guilemina Springett, then resident at a farmhouse in the town, before going off with her to found Pennsylvania.

Ancient England