These are a few images taken from a 1913 Georgia Historical Society publication of Spanish documents. They give an account of the invasion of Gualquini, and make a good supplement to the previous post. Note the map is English and Spanish, with different names for some of the same features shown on the Spanish maps.
Click to enlarge
The fort appears to have been right about where the pier is now, and the Spanish beach head somewhere near the Sea Island lodge and golf course. Early the next morning they marched up the beach toward the village.
Georgia Historical Society https://archive.org/stream/spanishofficiala01geor#page/n7/mode/2up
A collection of the documents in book form