Demarcus Luther was born in 1910 while the family was living in Colonia Oaxaca, Sonora, Mexico. When he was 2 years old his family was forced, by the Mexican Revolution, to leave Mexico. They were the last family to leave Colonia Oaxaca because his mother was expecting so they waited until his younger brother, Franklin Reynard, was born. They traveled about 85 miles and crossed the border at Douglas, Arizona. There his father built a new home for the family.

The following was taken from the life sketch of his sister, Mildred Adaline Haymore:

"I remember one day when I was home Aunt Mazie and I were in the dining room and Emma, Tenna and Demarcus were in the kitchen. All at once Demarcus started crying. We could tell by the way he cried that he was being hurt. Aunt Mazie and I both rushed to the kitchen to see what was happening. I reached the kitchen first and saw that Demarcus was holding on to the light cord, so I knew he was being shocked. Emma and Tenna were both standing there looking surprised and wondering what was wrong. I grabbed hold of the light cord above Demarcus' hand and gave the cord such a hard jerk that it pulled the cord right out of the socket and that stopped the electric current so Demarcus was no longer being shocked. Aunt Mazie look at me and said, "What did you do?" The light switch was on the outside of the house, almost up to the roof of the house, and I knew there was not time to find a ladder and climb up there to turn the switch off. Something had to be done quickly.

Ellen Ireta was born, and while Aunt Mazie was still in bed Demarcus took pneumonia. We took the best care of him that we cold, but he just kept getting worse. One day he wanted me to manicure his nails, but he was so sick that Father and Aunt Mazie thought it was best for me to wait until he was better to do it. He did not get any better, and in a few days he died. Then Aunt Mazie said she would like me to manicure his nails, because that was what he had wanted me to do, so I did ."