In the very lovely village of Helaugh I spotted engravings in one of the windows of the church of St John the Baptist. 
According to the Dictionary of Place Names – Healaugh means "High forest glade or clearing". Healaugh appears in the Domesday Book as "Hailage" and must have been a village in Saxon times. It stands about 100 feet above sea level. It’s said that just north of the church there used to be a castle; according to John Leland, the antiquary, who wrote an account of his travels through England, there were substantial stone remains of the castle which he saw when he visited Healaugh. The stone has probably been used in the building of houses and barns in the village.
In 1842 a broken tombstone was discovered about six foot below the surface in the graveyard. It has an inscription on it which seems to show two names MADUG and HEIU. Similar tombstones were found in Hartlepool in 1833 in a cemetery again well under ground at about four feet below the surface. The similarities seem to confirm that Healaugh was the latest settlement of St Hieu. The Venerable Bede quotes that a nun, Hieu, founded a convent near Hartlepool, then somewhere near Calcaria (the old name for Tadcaster). "She established a residence for herself about 650 AD." The West window in the Tower has a small pane of glass inscribed with the name Hieu.
It is thought that Abbess Hieu opened a monastery or hermitage on the site of The Old Priory down the coach road about a mile or so from the village.
A really fascinating church.