It is from the Second Crusade that William of Tyre, representing the attitude of the Franks of Jerusalem, begins to be a primary authority; while on the Mahommedan side a considerable authority emerges in Ibn Athir.
His book thus begins to be a real authority only from the date of the Second Crusade onwards; but the perfection of his form (for he is one of the greatest stylists of the middle ages) and the prestige of his position conspired to make his book the one authority for the whole history of the first century of the Crusades.
During the second crusade (1145-1147) Bernard of Clairvaux heroically protested against similar inhumanities.
It was alleged that, while accompanying her husband on the Second Crusade (1146-1149) Eleanor had been unduly familiar with her uncle, Raymond of Antioch.
Before we turn to describe the Second Crusade, which the loss of Edessa provoked, and to trace the fall of the kingdom, which the Second Crusade rather hastened than hindered, we may pause at this point to consider the organization of the Frankish colonies in Syria.
But the greatest success was attained when St Bernard - no great believer in pilgrimages, and naturally disposed to doubt the policy of a second Crusade - was induced by the pope to become the preacher of the new movement.
For the Second Crusade the primary authority in the West is the work of Odo de Deuil, De profectione Ludovici VII regis Francorum in Orientem.
After the second crusade the German Jews fell into the class of servi camerae, which at first only implied that they enjoyed the immunity of imperial servants, but afterwards made of them slaves and pariahs.
Of France (December 1145), announcing the Second Crusade and granting plenary indulgence under the usual conditions to those who would take the cross; and in January 1147 he journeyed to France to further preparations for the holy war and to seek aid in the constant feuds at Rome.