Forebear
/ˈfɔːrber/
Definition 1 of 1
Pro Tip 1/3Generational Reference
Forebear refers specifically to ancestors from previous generations, often used in historical or familial contexts. 
She often reflected on the hardships her forebears endured.
Pro Tip 2/3Chronological Distance
The term can imply a significant time gap between you and the ancestor, not necessarily a parent or grandparent. 
The castle had been in his forebears' possession since the 12th century.
Pro Tip 3/3Historical Respect
Using 'forebear' often reflects respect or reverence for ancestors' contributions or achievements. 
The festival honors the traditions of our forebears.