 Zamoyski gathered a significant fortune ; his estates generated a revenue of over 200 @,@ 000 zloties in the early 17th century . His personal lands covered 6 @,@ 445 square kilometres ( 2 @,@ 488 sq mi ) , and included eleven towns and over 200 villages . He was a royal caretaker of another dozen or so cities and over 600 villages . Totaled , his personal and leased lands covered over 17 @,@ 000 square kilometres ( 6 @,@ 600 sq mi ) , with 23 towns and cities and 816 villages . In 1589 he succeeded in establishing the Zamoyski Family Fee Tail ( ordynacja zamojska ) , a de facto duchy . Zamoyski supported economical development of his lands , investing in colonization of frontiers , and the development of industry , both small ( sawmills , breweries , mills and such ) and large ( his lands had four iron mills and four glass factories ) . 
