conservator

The story

1. Latin · derived fromcōnservātor“one who conserves”
2. Anglo-Norman · derived fromconservatour
3. Middle English · inherited fromconservatour
4. English todayconservator

From Middle English conservatour, from Anglo-Norman conservatour, from Latin cōnservātor (“one who conserves”), agent noun from cōnservō (“to preserve”).