As one of many who continually saw the SW trilogy, I knew something was up when an unnamed fighter pilot seemed talk with 'Wedge's' voice, but didn't look like the Wedge we knew. Apparently, Colin Higgins's voice was dubbed over as well...
Was this character ever given a name in the expanded universe?
Wedge Antilles - he's not treated as a second character.
As someone who grew up with the original SW trilogy and suffered through the prequels, I'm very well aware of that.
However, Colin Higgins obviously wasn't the Wedge we came to know (especially since Denis Lawson would appear later on in the film as 'Wedge') so I wondered if Higgins was given another name? (Other than 'fake Wedge,' of course...lol).
And I answered your question - he was never given another name in the EU and has always been considered to be Wedge.