Mysterious Monterrey Lake

I received this email from Jill today. Thanks, Jill. Everything we learn about Monterrey is like adding another piece to the jigsaw puzzle of east Texas and northwest Louisiana. Jill's email - "I have a friend that has a lake house on Monterrey Lake. Monterrey Lake is in Marion County, TX , The East side of the lake is only assessible from the Louisiana side but is still in Texas. The west side of Monterrey Lake is off State Line Rd and is only about 6 miles from the Louisiana state line. Thanks again Jill. I am still hungry for more information. Please, submit what you know about Monterrey. Eric