John Michael moved to Sheboygan, married the daughter of another German immigrant, who owned the local foundry, and took over his father-in-law’s business. He transformed it from a maker of ploughshares into a plumbing business. Today Kohler is the biggest maker of loos and baths in America. Herbert Kohler, the boss (and grandson of the founder), has done so well selling tubs that he has been able to pursue his other passion—golf—on a grand scale. The Kohler Company owns Whistling Straits, the course that will host the Ryder Cup in 2020.