As Muscovy regained stability, discontent grew within the serf and peasant populations. In Europe, three classes of peasants existed&colon; slave, serf, and free tenant. Elizabeth purchased the talented serf from the nobleman for her own choir. Many such rights were enforceable by the serf in the manorial court. One quarter of petty nobles were worse off than the average serf. The last type of serf was the slave. An alternative term is serf, from the Latin , meaning "slave". A freeman became a serf usually through force or necessity. Poet Mikhail Dudin believed that the poem was dedicated to the serf Olga Kalashnikova. On his older sister and nanny Kateryna married Anton Krasytskyi, a serf "from Zelena Dibrova". Saint Serf of Culross was associated with Nechtan's brother Bridei. Legend tells that Saint Serf (fl. The life of a serf belonged to the state. This dichotomy was often accompanied by a master/serf relationship. Within his constraints, a serf had some freedoms.