Riley comes from the Irish surname O Raghallaigh, popularly translated as "valiant" though the surname's own root is debated among genealogists, with some tracing it instead to a place name. The popular reading has stuck, and the name tends to carry connotations of spirited resolve.
The astrologer is able to control the actions of the stars if he knows the influx of their nature; is quite likely that he can modify the action before it happens. - Ptolomeus