Go back to the main page. Enter "747th" in the box in the upper left corner that reads "Search this forum" then click on "Go". Several messages relating to the battalion will appear including those you posted in June, July and August. Appears nothing new has developed.
The battalion spent a significant amount of time attached to 29th Infantry Division, which makes certain former members eligible for membership in the division's veterans association. Perhaps the association can assist in locating those named (or their next of kin).
29th Infantry Division Association 130 Union Road Coatesville, Pennsylvania 19320-1329
29th Infantry Division Association 835 Dexter Road Roanoke, Virginia 24019-4334
29th Infantry Division Association 5928 Robindale Road Baltimore, Maryland 21228-1224