For Woudstra there are 189 on Yasni with different names.
Among the most common last names on Yasni Woudstra is on position 4338.
A patronimicum ( "stra" ) for the descendants of a "Wouter", male Dutch name. Also "Wolter" ;"Woltjer". Popular abbreviation for Wouter is "Wout". Hence the family name.
(Sent from: Leonard Vis)