The name Thierno originates from the Mandinka and Fula languages of West Africa, particularly in the regions of Senegal, Gambia, Guinea, and Mali. It derives from the Arabic word "Thierno," which means "learned" or "scholar." This name gained prominence during the spread of Islam in West Africa, particularly between the 11th and 16th centuries.

In the medieval era, the title "Thierno" was bestowed upon Islamic scholars and religious leaders who had attained a high level of knowledge and wisdom in Islamic teachings. These individuals played a crucial role in the dissemination of Islamic education and the establishment of Quranic schools throughout the region.

One of the earliest recorded instances of the name Thierno can be found in the historical accounts of the Malian Empire, which flourished between the 13th and 17th centuries. Several prominent Islamic scholars and rulers from this period bore the name Thierno, such as Thierno Souleymane Baal, a renowned scholar and teacher who lived in the 15th century.

During the 17th and 18th centuries, the name Thierno gained further recognition in the region, particularly among the Fula people. Thierno Saidou Nourou Tall, a Fula scholar and religious leader from the 18th century, played a significant role in the spread of Islam and Islamic education in present-day Senegal and Gambia.

Throughout history, several notable figures have borne the name Thierno. These include Thierno Bâ, a Senegalese scholar and founder of the Mouride Islamic brotherhood, who lived in the late 19th century. Thierno Ganda Fèl, a 19th-century Fula scholar and military leader, is also known for his contributions to the preservation of Fula culture and language.

Another prominent figure was Thierno Amadou Barry, a 20th-century Guinean scholar, writer, and politician who played a crucial role in the country's independence movement. Thierno Birahim Tall, a Senegalese scholar and founder of the Tijaniyyah Islamic brotherhood in Senegal, was also a significant figure in the 19th century.

Thierno Mountaga Dah, a Guinean scholar and historian from the 20th century, made invaluable contributions to the preservation of the oral traditions and historical records of the Mandinka people.