 On 28 March 1193, Richard was handed over to the emperor in Speyer and imprisoned at Trifels Castle, taking revenge for Richard's alliance with Tancred of Lecce.Ignoring his nearly excommunication by Pope Celestine III for imprisoning a former crusader, he held the English King for a ransom of 150,000 silver marks and officially declared a dowry of Richard's niece Eleanor, who was to marry Duke Leopold's son Frederick.The opposition princes had to face the defeat of their mighty ally and to refrain from their plans to overthrow the Hohenstaufen dynasty.