Harshavardhana, also known as Harsha, was a renowned ruler of the Indian subcontinent who ruled from 606 to 647 CE. He was a patron of the arts and literature and his court was known for its cultural and intellectual vibrancy. Several notable figures adorned his court, including Banabhatta, Matanga Divakara, and Bharthrihari.

a) Banabhatta:
Banabhatta was a famous Sanskrit poet and scholar who served as the court poet of Harshavardhana. He is best known for his magnum opus, the Kadambari, an elaborate romantic novel written in classical Sanskrit. Banabhatta's talent and literary contributions earned him a prominent position in Harshavardhana's court.

b) Matanga Divakara:
Matanga Divakara was another prominent figure in Harshavardhana's court. He was a renowned musician and musicologist who contributed significantly to the development of Indian classical music. Matanga Divakara's treatise, Brihaddesi, is considered one of the earliest authoritative texts on Indian music. His expertise in music and his contributions to the field made him a valuable asset to Harshavardhana's court.

c) Bharthrihari:
Bharthrihari was a philosopher, poet, and grammarian who also adorned the court of Harshavardhana. He is best known for his collection of verses called the Shringara Shataka, which explores the theme of love and romance. Bharthrihari's philosophical works, such as the Vakyapadiya, also gained recognition for their insights into language and cognition. His intellectual prowess and literary contributions made him a respected figure in Harshavardhana's court.

In conclusion, all of the above-mentioned individuals - Banabhatta, Matanga Divakara, and Bharthrihari - adorned the court of Harshavardhana. They were all renowned scholars and artists in their respective fields and contributed significantly to the cultural and intellectual ambiance of Harshavardhana's court.