Charles Godefroi Sophie Jules Marie de Rohan

On 28 July 1748, Marie Louise gave birth to a son, who was baptised Charles Godefroi Sophie Jules Marie de Rohan. It was her mother-in-law who wrote to Charles's father, 'the Old Pretender', in Rome to tell of the news, but not that this child was his grandchild. Despite having been accepted as a member of the Rohan family, several genealogical books note the fact that the Rohans fail to mention this child again. Allegedly, Charles Godefroi died aged around five months, in either December 1748[3] or 18 January 1749.[4]

Louise lived at least another thirty-three years and apparently was never unfaithful again. To all appearances she was a good wife and mother to her first-born but never had another child. She made occasional appearances at court, then later in life became religious and devoted much of her time to charity.