Isaac Dorislaus

Dorislaus became advocate general of the army in the first civil war, and for all his previous theorizing about ancient liberties, quickly showed authoritarian tendencies by his attempted introduction of martial law to help him root out Royalists.

He is remembered for his part in the High Court of Justice for the trial of Charles I, although his role was not prominent, and he was assassinated by Royalists while on a diplomatic mission in his native country.

His apparent propagandizing for republicanism and regicide was seen as aimed at the King Charles I of England, who was suspected of Catholic sympathies and failure to uphold the country's interests against powerful foreign enemies.

While negotiating as a representative of the Commonwealth in the Dutch Republic, he was murdered at the Hague by a group of Royalists led by Walter Whitford, largely because of his role in the trial of Charles I.

[10] His death may have loosely inspired the short story Gentlemen of the Sealed Knot by Geoffrey Trease, about an unsuccessful Royalist attempt to assassinate the English ambassador to the Netherlands.