Who is Suleyman from Memed, My Hawk and what is their importance? "Memed

Suleyman sheltered Memed after he ran away to the Kesme village when he was eleven. He is the man who puts Memed in contact with the brigand Mad Durdu, but he also cautions him that he will not be able to stay with Durdu long. Eventually, he will have to form his own brigand band.