1. The earliest ancestors or founders of a family, group, or civilization; those from whom others are descended.
Usage: Plural form of primogenitor; Formal or literary usage

Examples

• The primogenitors of the Roman Empire laid the foundation for Western civilization.
• Historians traced the family's lineage back to its primogenitors in medieval Europe.
• The primogenitors of modern democracy established principles still valued today.
• According to legend, the primogenitors of the tribe migrated from across the mountains.
• We honor our primogenitors for their courage and vision in building this nation.
• The primogenitors of the company started with just a small workshop in their garage.