The Royal Medal, also known as The Queen's Medal, is a silver-gilt medal awarded each year by the Royal Society, two for "the most important contributions to the advancement of natural knowledge" and one for "distinguished contributions in the applied sciences" made within the Commonwealth of Nations.The award was created by George IV and first awarded in 1826. Initially there were two medals awarded, both for the most important discovery within the last year, a time period which was lengthened to five years and then shortened to three. The format was supported by William IV and Victoria, who had the conditions changed in 1837 so that mathematics was a subject for which a Royal Medal could be awarded, albeit only every third year.