The Marathi people are the Marathi-speaking migrants from present day Maharashtra, who migrated to Uttar Pradesh during medieval period.
The Marathi people, especially the Marathi Brahmins migrated to the Hindu holy city of Varanasi and other parts of Uttar Pradesh during the Medieval Period of India and dominated the intellectual life of the city and established an important presence at the Mughal and other north Indian courts.
The Varanasi pandits were final authority to decide the ritual status of any caste during intercaste dispute.
[1] During Peshwa Raj due to monopoly of Chitpavans in Pune, many families of Deshastha Brahmins and Gaud Saraswat Brahmins migrated to the newly formed Malwa state(Uttar Pradesh and Madhya Pradesh) and occupied higher administrative posts.
[2] According to the Economic Times, The Marathi population in Uttar Pradesh is now mainly concentrated in Kanpur, Varanasi, Prayagraj, Jhansi and Lucknow.