Elzear came from a noble family in southern France. After he married Delphina, she informed him that she had made a vow of perpetual virginity; that same night he did the same. For a time Elzear, Count of Ariano, was a counselor to Duke Charles of Calabria in southern Italy. Elzear ruled his own territories in the kingdom of Naples and in southern France with justice.
Elzear and Delphina joined the Secular Franciscans and dedicated themselves to the corporal works of mercy. Twelve poor people dined with them every day. A statue of Elzear shows him curing several people suffering from leprosy.
Their piety extended to the running of their household. Everyone there was expected to attend Mass daily, go to confession weekly and be ready to forgive injuries.
After Elzears death, Delphina continued her works of charity for 35 more years. She is especially remembered for raising the moral level of the king of Sicilys court.
Elzear and Delphina are buried in Apt, France. He was canonized in 1369, and she was beatified in 1694.