One of the great difficulties for people researching their French immigrant ancestors’ roots is that so little is known outside of France about when and why the French left their country. This dearth of knowledge has led many family historians of the nineteenth century to presume Huguenot, noble émigré or Alsace-Lorraine ancestry for any ancestor with a French name. The supposition became a family legend that then became a research frustration as more recent family historians attempt to prove what was never more than a misguided supposition. This webinar looks at the many waves of French migration, as well as the three mentioned in the title, from the seventeenth to the twentieth centuries. The historical reasons for when, why and to where they emigrated will provide the key points to bear in mind when conducting research. The bibliography, in English and French, contains not only books and articles concerning French emigration but a list of websites to aid the researcher.