Bhagat Ramanand Ji has one hymn in the Guru Granth Sahib Ji, in Basant. He was a Vaishnav teacher of Benares who took disciples without regard to caste, which was the break that made the northern Bhakti movement possible.
The disciples named in the tradition include Kabir Ji, Ravidas Ji, Pipa Ji, Sain Ji and Dhanna Ji, all of whom are in the Guru Granth Sahib Ji. Whether all of them were literally his pupils is doubted; the chronology does not work for every pairing.
His hymn describes setting out to worship, being stopped by his own teacher inside himself, and finding that there is nowhere to go.
He is the hinge between the older Vaishnav orders and the sant tradition that runs through to Guru Nanak Dev Ji, and the Guru Granth Sahib Ji contains him and five of his reputed disciples in one volume.
The Basant hymn is the account of an interrupted journey. He sets out with incense and water to worship and is stopped by the recognition that what he is going to find is where he already is.
The dates given for him are fourteenth or fifteenth century, and the tradition that all the northern sants descend from him is later and is not established.
One hymn is his whole presence in the volume, and it is enough to place him at the head of a lineage the rest of the Bhagats belong to.