HI: Douglas,I too am Researching the LaCasse Family.My mother was a LaCasse from Iota,La. Her name was Ella LaCasse,Her father was Soulange LaCasse married to Evanie Miller.I can give you more if you think you are from this line. I would like to see what you have so far. I would share .In France it was Casse,Kasse. Then in Canada it was LaCasse.