Complex sentence: It was the seat of the royal family of Koi thampurans and has produced many illustrious writers such as Raja Raja Varma Koil Thampuran, Kerala Varma Valiya Koil Thampuran and A. R. Raja Raja Varma.
Split into simpler sentences: It was the seat of the royal family of Koi thampurans. It has produced many illustrious writers such as Raja Raja Varma Koil Thampuran, Kerala Varma Valiya Koil Thampuran and A. R. Raja Raja Varma.