The Ribera House is a reconstructed example of a First Spanish Period (1565-1763) structure. It is unknown when the home was constructed. Artilleryman Juan de Rivera (Ribera) occupied the home until the end of the First Spanish Period. Ribera was a Native American raised in the Spanish mission village of Tolomato near St. Augustine. The original structure was demolished by the British in 1772. The Ribera House was reconstructed by the St. Augustine Restoration Foundation, Inc. in 1964.
The full Wikipedia entry for the Ribera House is available here.
The block and lot location for the Ribera House is Block 12, Lot 26 (B12L26)