S.1316, Eustace Fitzjohn -

Stephen (1135-1154), Eustace Fitzjohn, Penny, York, Phase 7, helmeted knight standing right, holding upright sword, · EVSTACIVS+, rev. cross within quatrefoil, EBOR · ACIT · DEFT, 1.25g/12h (Allen NC 2016, dies unlisted, cf. 119; cf. Mack 221-2; N 929a; S 1316).   Extremely rare.   Images courtesy of DNW, lot 28, 3rd November 2020.   Found at Thornton-le-Dale (N Yorkshire) (EMC 2020.0251) by Robert Brown. 

Eustace Fitzjohn was the Lord of Malton and Knaresborough who served under King Henry I becoming a wealthy landowner through marriage and then supporting the Empress Matilda when she fought a civil war with her cousin Stephen in the period known as the anarchy in England. There is a fortification which dates from this conflict not far from the coins find spot.
Eustace became a powerful business magnate, was a Justician of the north and a great monastic patron, founding three religious houses.
In 1138, Eustace lost custody of Bamburgh Castle to Stephen and decided to join forces with David I of Scotland fighting with him against Stephen at the battle of the standard that year. In July 1157 Eustace was killed in Flintshire after being ambushed by the Welsh army.