The Wolf Signet Ring

Footprints on the floor show traces of red clay, particular to a few London districts with high iron content. A bruise on Julian's face from a signet ring in the shape of a wolf was also found. This is an upper class wealthy person with a signetring ring with a wolf on it. They must belong to a family who has the wolf on their crest. And this person lives in a part of London with red soil on the ground. We're going to get this guy.