An interesting detailed overview of individuals who received land grants along the north shore of Lake Pontchartrain beginning in the 1770's was diligently compiled by Anita Campeau and Donald J. Sharp and published as an article in 2009 by the New Orleans Genealogical Research Society.
The article dealt with British and Spanish land grants recorded between Bayou Castine in Mandeville and the Tchefuncte River in Madisonville.
Here is a link to Don Sharp's blog that has a PDF copy of the article, complete with maps.
https://donaldsharphistory.blogspot.com/2018/11/land-grants-from-bayou-castin-to.html