[1][2] At the age of 16, Henry went to study law at Corpus Christi College, Cambridge and continued at Gray's Inn, London.

He returned to England to settle some financial arrangements and was arrested at Dover for refusing to take the Oath of allegiance and confined to Southwark gaol.

He completed his novitiate under his fellow prisoner, Father John Robinson, and took simple vows as a Jesuit.

On 22 April he was brought to the bar charged with being a priest and having withdrawn the king's subjects from their faith and allegiance.

[4] In 1643, he returned to England; arrested after about a year and a half he was imprisoned at Durham and Newcastle, and sent by sea to London.

At the quartering, the footmen of the French Ambassador and of the Count of Egmont dipped their handkerchiefs into Morse's blood.