3 years later, I was reading your message on LaLone Family Genealogy Forum and I realized that I might be able to help you. Definetely the Lalone and Lalonde is the same family. The family started in Baie d'Urfé, QC Canada in 1669 and the ancestor Jean de Lalonde dit Lespérance was killed by Mohawks in 1687. We have a monument in Baie d'Urfé to commémorate the death of our ancestor. You can write to my own email address and it will be pleasure to help you.
Have a nice day
Rene Lalonde, v.-p. Lalonde Family Association of America Inc.