2018-04-04 02:06:49 UTC
There was a slight ancestral precedent in the Angevin case, as the paternal grandfather of Joan and John was a great-grandson of John of La Flèche (died 1095/96), who has come up in another thread. Until I looked into this Jean's background I hadn't realised that his name was apparently revived in his agnatic family (the seigneurs of Baugency) at around the same time as it appeared among his descendants in the English royal family. Jean I of Baugency died in 1215/16 and may have been born in the mid-1160s.
It would be interesting to collect details of other Johns and Joans born ca 1165, if people here know of any.