Lawrence III
Jirarudan is a Collector, appearing in Revelation: Lugia (he is often refered to as being a 'pokémon collector', but there is no evidence he ever had a pokémon before the events of the movie)
He travels in the Hikoukyu (an airship the size of a small city, the name means "Flying Palace") and gathers artifacts from the world over. Despite the scope of his collection, he is rather shortsighted about the world around him. His entire plan to capture Lugia reflects this, as it involves the disruption of powerful natural forces.
What we know of his past is limited to the first object in his collection--an Ancient Mew card.
The origin of his pecular name is almost undoubibly from French philosopher and Stamford University professor Rene Girard, whose theories link problems in the modern world to legends and religious stories in the ancient world. Those who follow Girard's theories are known as "Girardins".