Sjoerd Wiarda

File:Sjoerd Wiarda en Haring Haringsma, 14e en 15e potestaat van Friesland Suffrid Wiaerda, Haring Harinxma. Potestatum Frisiae XIIII & XV (titel op object) Koningen en Potestaten van Friesland (serietitel) Frisia, sev, de, RP-P-OB-50.649.jpg

Art of Wiarda and Haring Harinxma by Pieter Feddes van Harlingen, c. Template:Trim

Sjoerd Pijbes Wiarda (in office 1399–1410) was the fifteenth potestaat of Friesland (or elected governor) now a province of the Netherlands.

Sjoerd Wiarda born in 1355 and died in 1410. He was the son of Pybe Wyarda and Claer van Eminga. He lived on Wiarda estate at Goutum. He was the last potestaat to rule both Oostergo and Westergo.

Wiarda was the leader in the fight against the Count of Holland. In 1398 he was a delegate to the convention with Willem van Beijeren, Count of Holland. He was elected in 1399, succeeding Odo Botnia as potestaat. In 1400 he fought as a Schieringer in the Battle of Dokkum and Camminghastins.

Succession

In 1400 there were several potestaats chosen for Oostergo and Westergo because of the religious disputes between Schieringers and Vetkopers. Haring Haringsma or Haring thoe Heeg, forefather of the Harinxma family, was elected for Westergo.