Hi,
I am a descendant of Joseph (Jose) Pinero who immigrated to New Orleans before 1800. My family had a story of owning property in Plaquemine Parish that was "stolen" by Leander Perez. The only Pinero I found in Plaquemine is Margarita (b. Blount Co, Tennessee), Daughter of Francisco and Lidia Casteel. There is also Ann Pinero in Prince Georges Co., Maryland who married a Casteel. I have not been able to connect either of these familied to our Pineros. You can chedk our tree pinerocousar on family tree.
Let me know if you have any info other than that.

Jerry