Jeff Dunn replied to Steve Schwartz:

>>I know of at least two composing William Wallaces.  This one studied
>>with Utah composer Leroy Robertson and with Edmund Rubbra in England.
>
>There's the third, William Vincent Wallace, English opera composer who
>died in 1865.

Not exactly.  He was Irish by birth, emigrated to Australia and played
a leading role in the early musical life of Sydney.  He also lived and
worked in, among others, the US and a number of European countries.
Vincent was his own addition to his name and was the one he preferred.

Richard Pennycuick