"During the 1850s, before and after the 1856 Treaty of Paris allowed her family to return to the Danubian Principalities, Maria Rosetti and her husband invested their energies into support for "Partida Naţională", calling for Wallachia's union with Moldavia (effected in 1859 by the election of Alexandru Ioan Cuza as Wallachian Prince, and subsequently "Domnitor" of the two states).