What is "masovians"

The Masovians or Mazovians (Polish: Mazowszanie ; Masovian: Masovsany) are a Lechitic tribe or an ethnic group associated with the region of Mazovia. They were referenced by Nestor the Chronicler in the 11th century. Mazovians were pagan before Christianisation. Perhaps they formerly buried the dead toward the North Star. Their main settlements were probably in the area of Płock. Later, the inhabitants of Mazovia used to be called Mazurzy (singular: Mazur). Today, the term Mazovians is again in use and refers to the contemporary inhabitants of the Mazovian Voivodeship in Poland. Like most Poles, Masovians are Roman Catholics.