 Aigusta was baptized as Anastasia in order to marry Simeon of Russia in 1333; he became Grand Prince of Moscow in 1341.There is no direct evidence that she was a daughter of Gediminas, but because the marriage was high-profile, most historians have concluded that she was a member of Gediminas' family.The marriage had great potential because Lithuania and Moscow were fierce rivals for supremacy in Ruthenia, but conflicts broke out again in 1335, just two years after the marriage.