Saint Wilfred's Church is a wealthy and centrally located church in Northumbria, found about half a day's march northwest of Eoforwic. It is staffed by clergyman Cuthbert along with two other priests and two militiamen. Upon approaching him Cuthbert will be very distrustful of the vikings, and ask you to leave. Refusing his request or taking any valuables (even those not marked red) will start combat.
Ransacking the church will gain you roughly 2,000 valuables, and lower your faction reputation with Northumbria by 10, and with the Picts by 5.