This is presumably a lighthouse keeper who worked in Port Isabel. The photo was taken by Reuben H. Wallis who worked as a photographer in Brownsville, Texas during the late 1800's. At the bottom the names "Wallis & Waltgenbach " are embossed which might indicate a business partnership. The lighthouse keeper's name is unknown. The original photo was faded but in good condition. The colorization process was accomplished separating three layers (background, uniform and face) to refine details and texture for colorization and best enhancment.
This is the photo in it's original form. Our source is the Southern Methodist University - DeGolyer Library digitized resource webpage. For more info click on this **LINK**
1864 February 13th - View of Point Isabel by C.E.H. Bonwill for Frank Leslie's Illustrated magazine
1910 point of view from casueway looking at shore of Point Isabel
1916 panoramic attributed to Robert Runyon of Point Isabel from Rio Grande railroad train station which connected was a small passenger/freight train that connected to Brownsville, Texas
Robert Runyon postcard from 1910's
Robert Runyon postcard from 1910s
from 1864 April 13 issue of Harper's Weekly (colorized by Javier R Garcia)
Wikipedian Beco summer of 2003 public domain image of Port Isabel Lighthouse State Historic site which was built in 1852 and retied in 1905 at 421 E. Queen Isabella Blvd. in Port Isabel, Texas