Şerâfeddin Zeynelâbidîn Dağıstanî (1875–1936) was a Naqshbandi-Khalidi sheikh born in Dagestan who migrated after the 1877–78 war and settled in Reşâdiye (today Güneyköy), Yalova. With his uncle and master Ebû Muhammed Medenî he founded the village, named 'Reşâdiye' after Sultan Mehmed Reşad visited. He died in 1936; his tomb in the Güneyköy cemetery is visited. (Sources: Wikipedia; Kültür Envanteri.)