▁up ▁in ▁the ▁village ▁of ▁St iens , ▁where ▁his ▁father ▁was ▁a ▁liberal ▁tax ▁inspect or . ▁He ▁was ▁an ▁eth nic ▁F ris ian , ▁and ▁his ▁name ▁is ▁sty led ▁in ▁the ▁traditional ▁F ris ian ▁way : ▁first ▁name ▁(" Pi eter ", ▁because ▁of ▁his ▁F ris ian ▁writ ings , ▁is ▁often ▁written ▁as ▁" P iter ", ▁as ▁it ▁is ▁sp elled ▁in ▁F ris ian ), ▁patron ym ic ▁(" J elles ", ▁meaning ▁" son ▁of ▁J elle "), ▁family ▁name ▁( T ro el stra ). ▁ ▁He ▁went ▁to ▁read ▁law ▁at ▁the ▁University ▁of ▁G ron ingen . ▁When ▁he ▁was ▁finished ▁he ▁settled ▁in ▁Lee u ward en ▁as ▁a ▁lawyer . ▁He ▁got ▁into ▁contact ▁with ▁politics ▁and ▁the ▁workers ' ▁movement ▁through ▁a ▁F ris ian ▁movement , ▁later ▁to ▁be ▁known ▁as ▁the ▁ ▁( F ris ian ▁People ' s ▁Party ). ▁He ▁had ▁originally ▁joined ▁this ▁movement ▁because ▁of ▁his ▁poetry ▁and ▁interest ▁in ▁the ▁West ▁F ris ian ▁language . ▁Through ▁the ▁movement ▁and ▁his ▁work ▁as ▁a ▁lawyer , ▁he ▁got ▁into ▁the ▁social - dem ocr atic ▁part ▁of ▁this ▁wide ▁movement . ▁ ▁In vol vement ▁with ▁S DB ▁In ▁ 1 8 9 0 , ▁Tro el stra ▁joined ▁the ▁S ocia al - D em ocrat ische ▁Bond ▁( So cial - D em ocr atic ▁League , ▁S DB ), ▁an ▁early ▁Dutch ▁social ist ▁movement ▁under ▁the