John I, Duke of Lorraine
| John I | |
|---|---|
Effigy of John I (Iean I) in Nancy | |
| Duke of Lorraine | |
| Reign | 26 August 1346 - 27 September 1390 |
| Predecessor | Rudolph |
| Successor | Charles II |
| Born | February 1346 |
| Died | 23 September 1390 (aged 44) Paris |
| Spouse | Sophie of Württemberg |
| Issue | Charles II Frederick, Count of Vaudémont Isabelle |
| House | House of Metz |
| Father | Rudolph, Duke of Lorraine |
| Mother | Marie of Blois |
John I (February 1346 – 23 September 1390) was the Duke of Lorraine from 1346 to his death. As an infant of six months, he succeeded his father, Rudolph, who was killed in the Battle of Crécy. His mother was Marie of Blois.