Derived from Old Norse stura "to be contrary". This was the surname of two important families in the 15th and 16th century Sweden. Members of these families served as regents of Sweden during this time. They are also known from the Sture murders which occurred on 24 May 1567. King Erik XIV of Sweden murdered several members of the Sture family who had been charged with conspiracy against the king. The surname is very uncommon nowadays. It's much more common as a first name (see STURE).