Looking for Relations of Leonard Garvin

My grandfather, James Leonard Garvin, died in Houston, Texas around early 1926 but was originally from Tennessee or Arkansas. He was an older brother in a family with a few siblings, had married and divorced an older woman there, and later married my grandmother in Houston after returning from WWI where he fought.

His second wife (my grandmother) was Thelma Burkett and they had one child, my mother Erin, born in Houston in September, 1925.

His last remaining sibling, a younger sister, passed away about 9 years ago in Tennessee (or Arkansas -- sorry, don't know which). I have never met any of my relatives from the Garvin family line and would love to find them.

Thank you for any help you can give me.