Rilei is of Irish origin, derived from the ancient word 'ri' meaning 'king', and 'leith' which signifies 'light'. This unique moniker combines these powerful elements, suggesting a regal illumination or radiance. It was rare historically but has seen some revival in recent times.
The name Rilei experienced fluctuating popularity between 2002 and 2017, with a total of 76 babies named Rilei born during this period. The most popular years for the name were 2009 and 2016, each with 12 and 7 births respectively. Conversely, the years 2006, 2007, 2011, and 2012 saw fewer than six babies named Rilei each year.