The earliest use of iron plate reinforcements is recorded by Guillaume le Breton. In his "Phillippidos", prince Richard - later King Richard I of England - is described wearing a "ferro fabricata patena" at a jousting tournament in 1188. Such iron breastplate, like later references of early developments of such harness, was described being worn under the hauberk, thus not being visible when all the armor was properly worn. The evidence that such new harness is first mentioned at jousting reinforces the assumption that such developments were designed to protect against lance strikes.