Acts 13:13

13 Now Paul and his companions set sail from Paphos and came to Perga in Pamphylia. And John left them and returned to Jerusalem.

Acts 15:35-41

37 Now Barnabas wanted to take with them John called Mark. 38 But Paul thought best not to take with them one who had withdrawn from them in Pamphylia and had not gone with them to the work. 39 And there arose a sharp disagreement, so that they separated from each other. Barnabas took Mark with him and sailed away to Cyprus...