After Michael, another attempt to connect "Io" with rule over several countries was made by Vasile Lupu of Moldavia. In 1639, he used a seal which reunited the Wallachian and Moldavian arms, calling himself: ""Io" Vasilie Voievod, by the Grace of God Prince of the Moldavian and Wallachian Lands". Lupu's attempts at invading Wallachia inaugurated a period of unrest in the latter country, leading up to the uprisings led by "Seimeni" mercenaries. In 1655, these groups installed Hrizea of Bogdănei on the throne in Bucharest, causing the distressed boyars to demand support from Transylvania. Their letter of supplication uniquely addressed Transylvanian Prince George II Rákóczi with the Voivodal "Io", also adapting his name into "Racolțea". Mihnea III, who emerged as Prince in 1658, during the latter stages of this conflict, used New Latin on his shillings, introducing him as "IO MICHAEL RAD D CVL TR PR".