Pietro De Gradenigo 
Pietro was born about 1252.1 Pietro's father was Marcus De Gradenigo. He was an only child. He died on August 13th, 1311.1 General Notes
[Joanne's Tree.1 GED.GED]
2 SOUR S332582
3 DATA
4 TEXT Date of Import: 14 Jan 2004
They had a daughter named Elizabeth.
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