The spelling of the word "Yronne" can be confusing at first glance. However, it is simply the French spelling of the English word "iron". The phonetic transcription of "Yronne" is /iʁɔn/. In this transcription, the "y" is pronounced as an "i" sound, the "r" is pronounced with a guttural French "r", and the combination of "on" is pronounced as an open "ɔ" sound. So, despite its unusual spelling, "Yronne" is simply the French way of writing "iron".