Their name is almost certainly related to that of the Iazyges, one of the Sarmatian tribes which, along with the Roxolani, reached the borders of Dacia during the late 1st century BC (the city of Iași is named for them).
The name of this group is likely derived from the Iazyges, a Sarmatian tribe that reached the borders of Dacia during the late 1st century BC. The city of Iași was named after them as well.