Isabelle Morningstar

Isabelle "Izzy" Grace Morningstar (Or Izzy Morningstar) is one of the twin daughters of Chazarrae and the surrogate daughter to Elisabeth Morningstar, the other being Anna Morningstar. She was carried by her father's sister Elisabeth who became her mother. Her existence was revealed by Magnus, the babies uncle. Elisabeth thought she was sick from Food Poison and her father thought that he was magically diseased, however the family thought the twins were dead, due to a sacrifice ritual by the Ancestors, which later failed because of their grandfather Lucifer, the leader of the Ancestors.

Elisabeth isn't the true mother of Chazarrae's twin daughters. Elisabeth is the surrogate. It was revealed that Chazarrae's finance was dying so, he transferred the twins with the help of his brother into Elisabeth's womb.

Isabelle Morningstar,  is a member of the Morningstar Family.

Throughout Lucifer's Encyclopedia
Chazarrae and Elisabeth thought they were sick. Chaz believed that he was magically diseased and Elisabeth thought that she was sick from food poison. Chaz and his brother performed a spell that transferred the babies into their sister's womb because Chaz's late fiance died during their late June wedding. It was believed by the Morningstar's that the babies had been killed with her as well. Later, as the babies were born, they were taken from their mother, and were sacrificed by the ancestors. The sacrifice failed due to their leader, the babies grandfather Lucifer, who then took the triplets and their father and hid them. It was said by their grandfather As long as they live they will remain hunted and will be somehow Consecrated among their ancestors.