Gelsimus_of_Toul
Saint Gelsimus of Toul, also known as Saint Celsin (fl. 445), was the fourth bishop of Toul.[1][2][3] He is venerated as a saint by the Roman Catholic Church.
He is known only from a mention of his name in the manuscript of Adso[4] and in the epitaphs of the bishops of Toul. He is dated to around 445 and in the succession of the bishops comes after Saint Alchas and before Saint Auspicius.