To those who took the cross against Mainfroy, the pope (A.D. 1255) granted
plenissimam peccatorum
remissionem. Fideles mirabantur quòd tantum eis promitteret
pro sanguine Christianorum effundendo quantum pro cruore
infidelium aliquando (Matthew Paris p. 785).
A high flight for the reason of the 13th century.