Complex sentence: He was known to be a man "learned in the law", and no doubt this was the reason why he was appointed Lord Chancellor of Ireland, serving from 1292--1294, and he held that office again from 1306--1308.
Split into simpler sentences: He was known to be a man "learned in the law", and no doubt this was the reason why he was appointed Lord Chancellor of Ireland. He served from 1292--1294, and he held the office again from 1306--1308.