Meanwhile both Ulster and Offaly were set aflame by the coming of a new Mortimer Viceroy (1423) Edmund, son of Roger of the Irish dress. When he landed with an English army O’Neill and O’Donnell had already marched over Louth and Meath (1423), compelling the English to give hostages and guarantees for their pledge that they would be under tribute for ever. Edmund called O’Neill and some of the leaders to his Trim Castle, and made arrangements with him; but they had scarcely left when he died of plague (1424), and Talbot, then Lord Chief Justice, pursued the chiefs and carried them prisoners to Dublin, demanding hostages and ransom. Calvagh on his side raided Meath, where he seized the Marshal of the English army, the Seneschal of the Viceroy’s manor, and other squires. But it was now the turn of Ormond, who had lately come to Ireland bringing a host of Saxons, and adding great strength to the English wars; and Talbot made terms with Calvagh before the appointment of the new viceroy. But the peace was brief. Calvagh entered into alliance with the princes of Ulster. He married his daughter Finola to O’Donnell, “harrasser and destroyer of the English.” And when O’Neill with O’Donnell marched a great army to Mullingar (1431), and on the Moat where O’Melaghlin had in old times ruled and judged Leinster, gathered the chiefs to take his wages and acknowledge him leader for the war, Calvagh joined his host in the ravaging of Westmeath till the English paid a heavy price for the sparing of their country. Later, when his son-in-law O’Donnell was captured and imprisoned in Dublin Castle (1434), then sent to England (1435), and finally to the Isle of Man (1439) to die there in prison, Calvagh marched, year after year, through Meath to avenge his captivity. The Justiciary or Deputy himself was taken prisoner by Calvagh’s son, and kept some time till the English of Dublin ransomed him. In the feuds of the barons he found allies. The son of MacFheorais, chief of the Berminghams and heir of “the treacherous baron,” suffered “an abuse” in the great court of Trim, the Governor’s castle. For as he entered the court (1443) under the safeguard of Ormond, the son of Barnewell, Treasurer of Meath, beat a _Caimin_--namely, a stroke of his finger on the nose of Bermingham’s son. On which he stole out of the town, and went towards O’Connor Faly, and they joined together, and it is hard to know that ever was such abuse better revenged than the said Caimin. They burned and preyed Meath and obtained their full demands--that Calvagh should have his duties from the English during his life as Lord of his territory, and that the Clan-Feorais should have all their hostages freely restored; and not only that but they obtained in this “war of Caimin” all conditions such as they demanded for holding peaceable quiet with the English. Ever more formidable, Calvagh now led his kerns to Moyclare beyond Maynooth and to Tara itself (1446).