Solution:
It is commonly held that he was born sometimes in the last quarter of the fifteenth century. His works include Sur Sagar, Sahitva Ratna and Sur Sarawali. In Sur Sagar, Sur Das deals with the life of Krishna’s childhood. He dis­played himself not merely as a master of child psychology but also as a devotee of the Almighty. The works and poems of Sur Das exercised tremendous influence on the people and encouraged them to follow the path of Bhakti.

Solution:
Surdas was the disciple of Vallabhacharya and he popularized Krishna cult in north India.

Solution:
The founder of Sikhism, Guru Nanak (1469-1538), was one of the best preachers and reformers in medieval India. He was critical of idol worship, pilgrimages, caste differences and the ceremonial frills of religion. Nanak founded his faith on a ritual-free, simple “Sat Shri Akal” or the worship of God and truth.

Solution:
Vallabhacharya was born in Varanasi. He propounded Suddhadvaita Vedanta (Pure non-dualism) and philosophy called Pustimarga (the path of grace). He was the founder of a school called Rudra Sampradaya.

Solution:
Nimbarkacharya in his commentary in 'Dashashloki' dealt with three realities: Brahma(the supreme reality), soul(chit) and matter(achit).

Solution:
Kabir is widely believed to have become the first disciple of the Bhakti poet-saint Swami Ramananda in Varanasi, known for devotional Vaishnavism with a strong bent to monist Advaita philosophy teaching that God was inside every person, everything.

Solution:
Ramananda was a 14th-century Vaishnava devotional poet sant, in the Ganges river region of Northern India. The Hindu tradition recognizes him as the founder of the Ramanandi Sampradaya, the largest monastic Hindu renunciant community in modern times.