St Leander of Seville was born in Cartagena, Spain during the sixth century. He was known as the Bishop of Seville. He was influential in converting Hermenegild and Reccared, the two sons of the Arian Visigothic King Leovigild. He is also known for introducing the Nicene Creed as a way to help reinforce the faith of his people and as an antidote against the heresy of Arianism, which denied the divinity of Christ. He died at the start of the seventh century in Seville, Spain.