Sir John Juyn
... that the 15th-century figure Sir John Juyn served simultaneously as Lord Chief Baron of the Exchequer and Chief Justice of the Common Pleas, only relinquishing the positions when he was appointed Chief Justice of the King's Bench?
... that the 15th-century figure <b id="mwOQ"><a href="./John_Juyn" id="mwOg" rel="mw:WikiLink" title="John Juyn">Sir John Juyn</a></b> served simultaneously as <a class="mw-redirect" href="./Lord_Chief_Baron_of_the_Exchequer" id="mwOw" rel="mw:WikiLink" title="Lord Chief Baron of the Exchequer">Lord Chief Baron of the Exchequer</a> and <a href="./Chief_Justice_of_the_Common_Pleas" id="mwPA" rel="mw:WikiLink" title="Chief Justice of the Common Pleas">Chief Justice of the Common Pleas</a>, only relinquishing the positions when he was appointed <a class="mw-redirect" href="./Chief_Justice_of_the_King's_Bench" id="mwPQ" rel="mw:WikiLink" title="Chief Justice of the King's Bench">Chief Justice of the King's Bench</a>?