He is one of the great scholars and guardians who grew up in Anatolia during the founding years of the Ottoman Empire. Somuncu Baba, whose real name is Hamid, was born in Kayseri in 1349. His father's name is Musa. His lineage is based on our prophet from the 24th generation. Sheikh Hamid-i Veli, who received his first education from his father, later attained superior degrees in Sufism and science by taking lessons from the leading scholars of the period in Aksaray, Damascus and Ardebil, respectively.

Sheikh Hamid-i Veli, who went to Bursa, the capital of the Ottoman Empire, with his student Hacı Bayram in 1395, hid himself here and was known as Somuncu Baba among the people. During the opening of the Great Mosque in Bursa, Somuncu Baba, whose secret was obvious with his interpretation of Surah Fatiha in seven different meanings, went on a pilgrimage to the Hejaz with his student after this event. Somuncu Baba, who came to Aksaray (Şehr-i Süleha) after the pilgrimage, continued his activities of science and guidance until the end of his life, and died in Aksaray in 1412. The Graveyards are in the Ervah cemetery in Aksaray.

Somuncu Baba is the teacher of Hacı Bayram Veli, Hacı Bayram Veli is the teacher of Akşemsettin and Akşemsettin is the teacher of Fatih Sultan Mehmet. Somuncu Baba guided the period he lived in and the following ages with his understanding of mysticism, and became the starting point of the spiritual climate that ensured the conquest of Istanbul with the students he trained.

Source: 

https://aksaray.ktb.gov.tr/TR-170584/somuncu-baba.html