From the playing fields of East Texas to entrepreneurship in Houston, the man affectionately known as “Poppa D-MARS” built a legacy rooted in family, hard work, faith and helping others succeed. Long before there was a D-MARS brand, there was Booker T. Davis Jr. There was the young athlete from East Texas who learned about competition playing alongside his brothers. There was the coach who spent countless hours on football fields and baseball diamonds teaching young athletes that what they did after the game mattered just as much as what they did during it. There was the businessman who understood…