A complete Frisian name usually consists of a given name, sometimes a middle name (which was often a patronym or a matronym in earlier times), and a family name. See European names for a list of the usual sources of Frisian given names. See also Dutch names and German names.
http://nds.wikipedia.org/wiki/List_vun_plattd%C3%BC%C3%BCtsche_V%C3%B6rnaams in Low German
http://de.wikipedia.org/wiki/Ostfriesischer_Vorname in German
http://www.amt-foehr-amrum.de/name.htm in German
http://www.meertens.knaw.nl/nvb/english in Dutch