There were two Americans, a mother and college-age daughter. The mother was an aviation intelligence analyst.
Reported earlier.
http://www.washingtonpost.com/world/emergency-responders-resume-surveying-remote-alpine-crash-site/2015/03/25/a5a6d974-d26b-11e4-8b1e-274d670aa9c9_story.html
3 Americans on jet that crashed in Alps, Germanwings CEO says