https://fr.wikipedia.org/wiki/Constant_Le_Breton
http://constant-le-breton.com/
https://www.ruevisconti.com/Histoire/EnfantsduMarais/CLeBreton.html
https://cths.fr/an/savant.php?id=118976
Son ascendance : https://gw.geneanet.org/persocholet?fc=geneastar&idgeneastar=gntstar7746&n=lebreton&nz=lebreton&oc=&ocz=0&p=constant&pz=constant
Gothanjou 