Lilasuka is Bilvamangala Thakura Gosvami. He was a South Indian, a brahmana, and his former name was Silhana Misra. When he was a householder, he became attracted to a prostitute named Cintamani, but eventually he took her advice and became renounced. Thus he wrote a book named Santi-sataka, and later, by the mercy of Lord Krsna and the Vaisnavas, he became a great devotee. Thus he became famous as Bilvamangala Thakura Gosvami. On that elevated platform he wrote a book named Krsna-karnamrta, which is very famous amongst Vaisnavas. Since he exhibited so many ecstatic symptoms, people used to call him Lilasuka.