Complex sentence: Patrick Finglas (died 1537) was a leading Irish judge of the sixteenth century, regarded as a mainstay of the English Crown in Ireland and author of an influential tract on the decline of English power.
Split into simpler sentences: Patrick Finglas (died 1537) was a leading Irish judge of the sixteenth century, regarded as a mainstay of the English Crown in Ireland. He was also the author of an influential tract on the decline of English power.