Robert was the son of Elmer J. Santilli and Claire Louis Davis. The date and place of his birth have not been found.
He had two marriages/partners. His first wife was Janice L. Unknown. They were married, but the date and place have not been found. Their only known child was Stacy Lynn ().
His second wife was Cathy Ann unknown, who he married on ABT 1978. The place has not been found. They had no known children.
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