I followed up with your suggestion to contact the Millsap Heritage Society via the Post Office there. I spoke for about 10 minutes with Joann Barnhart who looked up cemetery records in Parker County for me. My great grandmother Danella Lamar is not buried in Texas, but her grandparents are (Moses Perry and Sarah Lamar).
Joann was able to recollect many older Lamars who stayed in the area through her mother who was quite the historian. My great grandmother moved on to Colorado then eventually California and Washington and Oregon. Joann will be sending me a copy of the cemetery records in Parker County and possibly photos of the markers. Apparently, the S. Lamar St. in Millsap is named for the Lamar family I am a descendant from.
In relaying this newfound information to my father, he told me his great uncle Clyde Lamar owned a mortuary in Texas. I googled Clyde Lamar funeral home and found a wonderful link to the Moses Perry Lamar family on the University of Texas at Arlington website http://library.uta.edu/findingAids/GA236.jsp#Series%20II
Thank you so much for the push in the right direction in finding out more about this branch of the family!
We are overwhelmed with the wealth of information we've found just for a couple hours of surfing the internet and 10 minutes of phone conversation!!
Thank you again, your kind help is so appreciated,