In this case could the same first name be an indication of the link as
for example :
Jean Baptiste, Pope Joan, Joan of Arc ?
Also I am interested in any link between John the Baptist and
Mary Magdelene as I noticed in the past that she was more
offen represented with the Baptist than Jesus in the Da Vinci
paintings. They were from the same family anyway as
Mary Magadelene was the half-sister of Jesus and the cousin
of John the Baptist. I just wonder why she is more offen depicted
with the Baptist there must be a good reason.