The Gallagher you cite was detained by GERMANY, so is likely not the target.
Here is something I picked up off the web, and appears to give a bit of credibility to the "unsubstantiated" listing I put in the earlier post. Looks promising.It is probably important to note that there are at least three ways to spell Gallagher, Gallager, Gallaher.
For what it's worth, the POW database contains many errors of spelling and enumeration.Human imput errors...I have seen symbols inserted as numbers and this is just missed key strokes, which does nothing more than limit your search ability.Unless you go looking for the error (who would?) you won't find your target.