Jeff,
You are right, it is COLLIGAN! For some reason I keep writing his name as Collingwood, I'm so sorry John! Fortunately the article contains all proper spellings.
Here is an example, "John Colligan and with Trey Kemp and his team from Colligan Golf Design out of Arlington, Texas were determined to do what most thought an impossibility and have found a way to not only restore 15 of Tilly’s original holes as he designed them, but to even bring back the blocked up river into play once again..."
John & Trey have done a fantastic job.
Actually the link does take you to it. You just scroll to the right and there it is!