According to Daday [Dabao, Joy Frances (I472)]
Maria Zayco (1842-1912) came to Cauayan, Negros Occidental with her parents from Arevalo, Iloilo. Her mother was Martina Decena, and her father (no first name) was a Suico. Some say Soyco. She changed the name to Zayco, therefore, everyone with this last name is her descendant. ---as told by Asuncion (Nena) Juson.
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Herbert Zayco (I339)