Athafuns II, also known by the modern version of his name, Alfonso II, was King of Spain from 885 until his death in 910, and also Duke of Tarragona from 878 onwards. His paternal grandmother was a daughter of King Veremund I and, when the senior Wambid dynasty became extinct in 885 with the death of King Ramiro II, Athafuns was his closest living male relative and therefore had a good claim to the throne. Athafuns was elected king in July of that year and quickly set about securing the position of his new Tarragonese dynasty.