Pier Gerlofs Donia aliishi kuanzia mwaka 1480 hadi 1520. Alikuwa jitu lenye miguvu ambalo inasemekana alikuwa na urefu wa zaidi ya futi 7. Huyu alipigania uhuru wa Friesland. Donia pia alikuwa akifahamika kama Grutte Pier, ambayo inamaana ya "Kijana Mkubwa", kwa lugha ya Kifrisia, au Grote Pier, ambayo inamaana sawa tu na kwa lugha ya Kidutch. Huyu tena alikuwa haramia. Jitu hili lilipigana vita dhidi ya watu wa kutoka Uholanzi na Ujerumani, na Waburgundia. Katika mapambano yake makubwa ya baharini, aliziteka nyala meli zipatazo 28, na akaua takriban watu 500 ambao wote aliowakamata kama mateka. "Kijana Mkubwa" halafu baaday waliita "Msalaba wa Wadutch". Genealogy - Pier Gerlofs Donia at BradandKathy.com Genealogy - Pier Gerlofs Donia at Langenberg-Laagland.com, see Pier Gerlofs biography, downloadable PDF DOC Volksverhaal (Meertens Institute) Archived 20 Mei 2008 at the Wayback Machine. on the saga (Dutch) Another page with a lot of useful information + images of Pier with the Frisian-flag + image's of Piers' statue in Kimswerd, Frisia (Dutch) Sound clip of Pier's rhyme About Piers' family-life, children and descendants Official website of Grutte Piers' village of origin Archived 14 Juni 2005 at the Wayback Machine.