Frances Captain I searched the entire cemetery and there was only one headstone for a Captain. I will post it to his memorial page within the next couple of days. There are many unmarked graves in this cemetery.
I suggest that you contact St. Joseph's Parish, 140 W. Government St. P. O. Box 13566, Pensacola, FL 32591 as they are the keepers of the records for this cemetery. Their phone number is 850-436-6461. You could also contact them via their web site www.stjosephchurchpensacola.parishesonline.com or through the Pensacola-Tallahassee Diocese offices (just Google Pensacola-Tallahassee Diocese).
I'm sorry I was not able to locate your ancestor. Jan