By Chris Mannix The native of Ireland became the best women’s pound-for-pound fighter after moving to sleepy New England. Boxing gyms, renowned for their simplicity, often double as shrines to the elite. In Las Vegas, banners for The Money Team hang under a wall of fight posters at the Mayweather Boxing Club, an unsubtle acknowledgement of Floyd Mayweather’s achievements. Wild Card officially belongs to Freddie Roach, but even the Hall of Fame trainer will concede that it’s the House That Manny Pacquiao Built, with pictures of a triumphant Pacquiao wallpapering Roach’s Hollywood club. Katie Ta…