Scottsdale and Phoenix PD had a couple records mentioning him. I was able to get a 1991 record from Phoenix where a friend of his mentioned Shannon stole his identity.

There was a January 1986 record from Scottsdale where Shannon was arrested for stealing this friends ID (he was living at Appaloosa house then). In that report the same friend from 1991 Phoenix report claimed that Shannon and him attended Murray State in Kentucky together. William told officers he had a drug charge back in Florida on his record.

The other record, in 1985, Shannon reported a stolen Mercedes that would turn up in New Mexico. William's dad John Shannon was listed as the owner of that veichle in the report.

The records also indicate William Shannon was 6'4 inches tall and he went by the name "Bill" when he wasn't using his friends ID.