Describe what happens in Kingsbridge Cathedral on Whitunsday after William is confirmed as the earl of Shiring.

A loud noise shakes the building as huge cracks appear in the walls. The stone ceiling tumbles down on top of the villagers of Kingsbridge. Many are crushed in the wreckage. As the dust settles, Bishop Waleran smiles triumphantly at Philip. Just then, a baby is heard crying. The survivors dig through the wreckage, desperate to save the baby. They unearth the baby and its smiling mother, Aliena.