I guess I last saw them when they were in the US and briefly visited Ithaca with my parents ten or so years ago. Eric's parents and sister Marie-Pierre were traveling; he and his wife didn't come. I last saw them in 1989, when my mom and I were briefly in France, having traveled with my father to Italy for a business trip he "had" to take. :-)
Definitely need to get back to France one of these days and see all these folks.