The Counts of Celje were a prominent noble family in the region of Slovenia during the late Middle Ages. They rose to power in the 14th century and became influential in the politics of Central Europe. The family is known for its strategic marriages and alliances, which helped them expand their territory and influence. The Counts of Celje played a significant role in the Holy Roman Empire and were involved in various conflicts and power struggles. Their lineage included notable figures such as Count Hermann II and Count Ulrich II, who contributed to the family's legacy until their decline in the 15th century.