Paulinus was the first Bishop of York. He had little success in converting the pagans for the first year. In 626, an assassin named Eumer was sent by Cwichelm of Wessex to kill King Edwin. Eumer found the king at his royal estate on the river Derwent on Easter Day. Pretending to have a message from his master he was allowed to see the king. He had a two-edged knife treated with poison and tried to attack King Edwin. But he killed the king's thane and managed to only wound the king. That evening his first child was born, a daughter named Eanfled. In front of Bishop Paulinus King Edwin prayed to his gods in thanks for the safe delivery of his child. Paulinus told him that it was "his" prayers to God that gave the Queen a safe and almost painless delivery. The king was very pleased with this explanation made Paulinus a promise. If God would grant him a victory over his enemies who tried to assassinate him, he would accept Christianity and be baptised. As a guarantee of his promise he allowed his newborn daughter to become Christian. She was the first of the Northumbrians to be baptised. The baptism took place at Pentecost and in the ceremony several members of the royal family were also baptised. 