I, too, am a descendant of Alexander Lyons and John V. Lyons. My Grandfather John D, Lyons is my Grandfather.
This information about Alexanders disappearance is a new one to me and my daughter, Paula, who has taken over my research. Also I am a friend of Joan Huber, who is descended down from your Clark Lyons. If you should find anything in the passenger manifests, please let me know.