BUILDING & CHURCHYARD
The only known archaeological research in the churchyard took place in 1994, to the immediate north of the church walls and west and south of the tower, when a ditch was being dug to improve the drainage. Only a preliminary account of that event exists: a final and more comprehensive report cannot be found or was never completed.
Most 'finds' were fragments of Early Medieval origin but one sherd was presumed to be Iron Age or Roman and another was identified as Early/Middle Anglo Saxon pottery of the 5th – 8th centuries.
A large block of millstone grit, found to the south-west of the tower, and roughly worked at some time, may be a marker stone dating from the Bronze Age.
This limited research supports the view that the settlement at Grimston has a long history.