William I of Dampierre | |
|---|---|
| Lord of Dampierre | |
.svg) | |
| Reign | c. 1151 – c. 1174 |
| Predecessor | Guy I of Dampierre |
| Successor | Guy II of Dampierre |
| Other titles | Lord of Saint-Dizier, Moëslains et Saint-Just |
| Born | c. 1130 |
| Died | c. 1174 |
| Noble family | House of Dampierre |
| Spouse(s) | Ermengarde de Toucy |
| Issue | Guy II of Dampierre Milon Helvide Elisabeth Odette |
| Father | Guy I of Dampierre |
| Mother | Helvide de Baudément |
Guillaume I of Dampierre (c. 1130 - c. 1174) was Lord of Dampierre, Saint-Dizier, Moëslains and Saint-Just, Constable of Champagne and Viscount of Troyes in the middle of the 12th century. He was the son of Guy I of Dampierre, lord of Dampierre, and Helvide de Baudément.[citation needed]