The saint who left his wife is Saint Paul the Apostle.
While Saint Paul is known for his impactful contributions to Christianity, his past life included being married. He was a Jewish man who adhered to the traditions of his faith before his conversion to Christianity. During this period, he was married. However, after his conversion, he chose to remain celibate and dedicated his life to spreading the gospel.
This decision is mentioned in the Bible, specifically in 1 Corinthians 9:5, where Paul states: "Do we not have the right to take along a believing wife, as do the other apostles and the Lord's brothers and Cephas?" He goes on to explain that he chose to forgo this right for the sake of his ministry.
While the exact details of Paul's marriage are not explicitly revealed in the Bible, his decision to leave his wife is a significant aspect of his life story. This choice reflects his commitment to his newfound faith and his dedication to his ministry.