Rev. Santiago Santiago Diaz affectionately known as "Chaguin", age 80, was a U.S. Army Veteran of the Vietnam War, Retired School Teacher in the U.S. Virgin Islands Public School System, and Retired Pastor from Iglesia Samaria in Vieques, Puerto Rico, and St. Croix, US Virgin Islands. Santiago was born in Fajardo, Puerto Rico on July 25, 1940, and went home to the Lord on April 1, 2021. Santiago was the most loving husband of Minerva Santiago; loving father of Samuel (Amarilis) Santiago, Ruth (Misael) Melendez, Saul (Jamie) Santiago, and the late Marta Santiago; adoring grandfather of Sergio Santiago, Eric Perez, Anthony Perez, Yanelis Melendez, Shae Melendez, Jai-Lynn Santiago, Savian Santiago, Samuel Santiago, Eliana Santiago, and the late Samalis Santiago; dear son of the late Manuel & Gilberta de Santiago; beloved brother of the late Julio de Santiago, Manuel de Santiago, Priscilla de Santiago, and Marta de Santiago; unforgettable uncle; caring cousin; and fond friend of many.