Sarwar was from a prominent Bengali Muslimfamily of Sufi pirs who were based in Dayra Sharif in Shyampur, present-day Ramganj, Lakshmipur District. His ancestor was a Syed who originally settled in Raipur, arriving from Delhi. Golam Sarwar's father and grandfather were known as pious people and followed strict religious rites. They were hereditary servants of Diyara Sharif of Shampur. Diyara Sharif was considered a holy place by all Hindus and Muslims in the area.
It is stated that Husseini played an important role in the 1946 Noakhali riots. Ghulam Sarwar Husseini and his followers started preparing the stage for the massacre by spreading provocative speeches in various rallies. Noakhali was a remote area as it was inhabited by many canals and rivers. He called on the persecutedBiharis in Noakhali. To this end he created a force to provide the Biharis with security and accommodation. It was known as the Miyar Fauj. On the morning ofOctober 10, he sent a letter to Rajendralal Chowdhury through the Chowkidar and offered to discuss the matter. But when Rajendralal did not respond, Muhammad Ghulam Sarwar Husseini called a rally of his loyal devotees and Muslims at Shahpur Bazar in the morning. There he highlighted the position of the Muslims at that time and called for the overthrow of the educated Hindus. With this Muhammad Golam Sarwar Husseini started a conflict with him. However, Sarwar was sheltering the Biharis. But the Indian National Congress and the All-India Muslim League did not respond to his efforts. No one played a strong role in the solution, leaving him disappointed.