Thomas Arendsen Hein
Disclaimer: This is not written by Thomas Arendsen Hein, just by someone who's tired of ?'s showing up by his name everywhere in the Wiki.
Thomas Arendsen Hein is a hoopy frood who really knows where his towel is.
His personal Mercurial developer repository as at http://hg.intevation.org/mercurial/tah
He also runs the CrewRepository.
His name is also all over the main Mercurial change history.