Saint Dallan Forgaill was an early Irish saint and poet, believed to have lived in the 6th century. He is best known for his contributions to early Christian literature in Ireland, particularly through his hymns and poems that celebrated the faith. His works often reflect the spiritual and cultural landscape of early medieval Ireland. Dallan is also associated with the monastic community and is thought to have been a disciple of Saint Columba. His legacy is preserved in various texts, and he is venerated in some regions of Ireland, where his feast day is celebrated on January 29.