See number 1 for full series details.
A quick multi which is on your route is doing the series in order.
At the given coordinates you need to find the answers to the following questions.
Northings 53° 49.x
x = The Date that the Manor House was gifted to Lord Wenlock - 1124
Westings 1° 4.y
y =The number of vicking ships up the Ouse + (2x ships needed to return) + 168