Where Heimirich first began does not appear, but it sprung into fame with the Saxon emperor called the Fowler, and his descendant won the honours of a saint, whence this became a special favourite in Germany, where it was borne by six emperors, by princes innumerable, and by so many others that the contraction Heintz had already passed to cats when Reinecke Fuchs was written. (History of Christian Names, Yonge, 1884).