Born Mustafa Tarhan in 1864 in Dağönü village of Of, Haçkalı Baba was also known as Kuş Mustafa and Haçkalı Hoca. He pursued religious and Sufi learning and is counted among the region's late saints. He died in Ramadan 1949 and his tomb stands at Haçka Yayla in the Düzköy/Akçaabat area beside a mosque built in his name. (Sources: Günebakış; Kuzey Ekspres)