Her parents were Antoine-Emile Moulin, a history geography professor and a French politician, and Blanche Pègue from Saint-Andiol.
Joseph died slowly and painfully of peritonitis in 1907 at the age of 19, leaving his family, including Laure, traumatised.
Following the death of her brother in 1937, she was nominated as English teacher at the Collège moderne et classique Legouvé, a secondary school in Montpellier.
During World War II, Laure Moulin worked as a secretary for her brother when he came clandestinely to Montpellier.
[5] As soon as 1946, she started to work for the memory of her brother, listing inauguration places and commemorative monuments concerning him.