Philip baptized many Samaritans, including a sorcerer.

Acts 8:9-13

9 There was a man in that city whose name was Simon. He had been practicing sorcery for a long time, and he had been amazing the people in Samaria province by doing that. He continually claimed that he was a great/important person. 10 All the people there, both ordinary and important people, listened to him. Various ones of them were saying, “This man works in extremely powerful ways because God has caused him to be a great person.” 11 They continued to listen to him carefully, because for a long time he had astonished them by practicing sorcery. 12 But then they believed Philip’s message when he preached to them about how God desires to rule [MET] the lives of people who believe in him, and about Jesus being the Messiah [MTY]. Both the men and the women who believed in Jesus were baptized. {Philip was baptizing both the men and the women who had come to believe in Jesus}. 13 Simon himself believed Philip’s message and, after he was baptized {after Philip baptized him}, he began to constantly accompany Philip. Simon was continually amazed because he often saw Philip doing many kinds of miraculous things.