Karaca Ahmet Sultan was an Anatolian dervish-saint who in the era of Orhan Gazi (14th century) settled in Pamukova, founded a lodge, and contributed to the area's Islamization. His Ottoman-era tomb in Paşalar village holds five family graves; the brick-and-stone vaulted structure is visited. (Sources: Sakarya University Şehir Hafızası; Ministry of Culture Sakarya Directorate; Kültür Envanteri.)