Just when the castle was built no one knows, but it was thoroughly restored and largely added to by Sir Basil Brooke, to whom it was granted after the confiscation in 1610, when the power of the O'Donnells was finally broken. Red Hugh was really the last of the line, and his short life of twenty-eight years was more crowded with adventure than that of most heroes of romance.

He was the son of Hugh O'Donnell, head of the clan, and of a high-spirited daughter of the Lord of the Isles, Innen Dhu Mac Donnell, whom Hugh of the Red Hair resembled in more ways than one. He was kidnapped by the English when only thirteen, and taken to Dublin and imprisoned in the castle there, as a hostage for his father's good behaviour. A year later, he managed to escape; was recaptured, escaped again; and, by remarkable cunning and daring, eluded the pursuers who were close after him, and got through to Donegal.

He arrived there to find a great force of English camped about the place; but, half dead with exposure as he was, he mustered a force of his clansmen, marched on the English and put them to rout—a good beginning for a boy of fourteen. From that time forward, he was the firebrand which kept all Ireland alight against the invaders; but at last, as has happened so frequently in Irish history, a traitor in his own camp overthrew him—his cousin and brother-in-law, Nial Garv the Fierce, who, being older than Hugh, thought that he should have had the O'Donnellship and been crowned at the Rock of Doon, and so grew jealous of the red haired lad, and ended by going over to the English.

There was red battle between them after that, and the English were treated to the pleasant spectacle of Irishmen slaying each other; but Hugh was called away to Kinsale to join the Spaniards, stopping at Holy Cross on the way, as we have seen, for the Abbot's blessing, and then going on to a ruinous defeat. He went to Spain, after that, to plead for more help, and died there, of poison it is said, at the age of twenty-eight, and lies buried at Valladolid.

His brother, Rory O'Donnell, was recognised by the English and made Earl of Tyrconnell, but at the end of a year or two he found himself so surrounded with intrigue that, in fear for his life, he gathered up such of his belongings as he could and fled the country. O'Neill, Earl of Tyrone, fled with him, and this "flight of the earls" was the end of Irish power in the north of Ireland, for their estates were declared forfeit, and divided among adherents of the English court. Nial Garv, who had contributed so much to the O'Donnells' overthrow, put in a claim for their estates, but was arrested and sent to the Tower of London and left to rot there till he died. Such was the end of Donegal as the seat of a Celtic Princedom, for the new prince was an Englishman, Sir Basil Brooke.

It is his imprint you will see upon the castle as it exists to-day—particularly in the great sculptured chimney-piece which stands in what was once the banqueting hall, and which is a marvel of elaborate, though not very finished, carving. Brooke was a Catholic and a royalist, a supporter of Charles I, and after the fall of that unlucky monarch, was imprisoned in the Tower and his estate declared forfeited to the Parliament. The old castle, now the property of the Earl of Arran, fell gradually to ruin, until to-day only the shell remains.

Next to the chimney-piece, the most interesting feature of the interior is the vaulting of the lower rooms, which are lighted only by narrow slits like loopholes. This vaulting is made of flat stones, an inch or two in thickness, set on edge, and though rough enough, is as firm to-day as the day it was put in place.

As we came out of the grounds, we were accosted by an old man with a flowing white beard, who suggested that we visit his tweed depot, just across the street, and see for ourselves what Donegal tweeds really were. He was so pleasant about it that we couldn't refuse; and to say that we were astonished when we stepped inside his shop would be putting it mildly, for there, in that village of twelve hundred people, was the largest stock of tweeds and other Irish weaves that I have ever seen. The place was fairly jammed with great rolls of cloth; and when we said we weren't especially interested in tweeds, but might be in a steamer-rug, he led us up to a wide balcony and produced rug after rug; beautiful rugs, soft and thick, pure wool in ever fibre. Of course we succumbed!

Mr. Timony, for such was the old man's name, was very proud of his shop, as he had a right to be, and of his American custom. He told us that President Woodrow Wilson and William Randolph Hearst had both been among his visitors, and he evidently considered them equally distinguished!

It had begun to shower again by the time we tore ourselves away from Mr. Timony, and Betty elected to return to the hotel; but I wanted to see the ruins of the old abbey, a little way down the river, and walked out to it. There is scarcely more left of it than there is of Assaroe—just some fragments of ivy-clad wall standing in the midst of a graveyard, as may be seen from the picture opposite page 438. The graveyard is still used, and when I got there, I found three men trying to decide on the site for a grave, while the diggers stood by, with their long-handled spades, waiting the word to begin. They had a hard time finding a place, for the graveyard is crowded, like most Irish ones, and they wandered about from place to place for quite a while.