Biagota is known as the probable wife of Boleslas I of Bohemia and, therefore, possibly the mother of their four children. Her existence is inferred from a few coins which are considered the oldest type of Přemyslid denar. The inscription reads BIAGOTACOIIIIX or BIAGOTACOVIIX for Biagota Coniux. Her origin is unknown.[1] She could originate from one of German states of Holy Roman Empire or from a Slavic country (Blahota or Bjegota was an old Bulgarian name) but by this time rulers were marrying across Europe, and either hypothesis could be correct.[2]