Captain Pareira promised that every satisfaction should be given before he left the country, and again requested that his hundred soldadoes be marched back to their ship.

This Lachlan was willing to do, but still suspecting the commander of the galleon as a wily bird, he detained three of the officers of the troops as hostages to assure final settlement. Then he sent on board the Florencia young Donald Glas, son of the MacLean of Morvern, to collect what was due and adjust the affair. No sooner had he set foot on deck, than he was disarmed and bundled below by order of Pareira who considered that two could play at holding that form of collateral known as hostages.

Now ensued a dead-lock. Lachlan MacLean refused to yield up his brace of Spanish officers unless the demands of his people were paid in full, while Captain Pareira kept Donald Glas locked in a cabin and swore to carry him to sea. The tragedy which followed is told in the traditions of Mull to this day. When Donald Glas learned that he was kidnapped in the galleon, he resolved to wreak dreadful revenge for the treachery dealt his kinsmen. On the morning when the Florencia weighed anchor, an attendant who had been confined with him was sent on shore and Donald sent word of his fell intention to the chief of the clan.

Overnight Donald Glas had discovered that only a bulkhead separated his cabin from the powder magazine of the galleon, and by some means, which tradition omits to explain, he cut a hole through the planking and laid a train ready for the match. Just before the Florencia weighed anchor he was fetched on deck for a moment to take his last sight of the heathery hills of Mull and Morvern. Then the captive was thrust back into his cabin, and with her great, gay banners trailing from aloft, the galleon made sail and began slowly to move away from the shore of Tobermory Bay.

It was then that Donald Glas, true MacLean was he, fired his train of powder, and bang! the magazine exploded. The galleon was torn asunder with terrific violence, and the bodies of her soldiers and mariners were flung far over the bay and even upon the shore. So complete was the destruction that only three of the several hundred Spaniards escaped alive. The Florencia had vanished in a manner truly epic, and proud were the MacLeans of the deed of young Donald Glas who gave his life for the honor of his clan.

One of the surviving traditions is that a dog belonging to Captain Pareira was hurled ashore alive. The faithful creature, when it had recovered from its hurts, refused to leave that part of the strand nearest the wreck, and continued to howl most piteously by day and night as long as it existed, which was more than a year. The Spanish officers, who had remained as hostages in the hands of Lachlan Mo'r MacLean were set at liberty by that sometimes courteous chief, and were permitted to proceed to Edinburgh where they lodged complaint with the king touching the destruction of their galleon. The matter of Captain Pareira having been disposed of in this explosive fashion, Lachlan MacLean returned to his main business of harrying the MacDonalds, and so fiercely and destructively was the feud conducted thereafter, that King James thought it time to interfere, lest he should have no subjects left in the Western Highlands. The warring chiefs were summoned to Edinburgh and imprisoned and fined, after which they made their peace with the king and returned to their island realms. The affair of the Florencia was named in the charges brought against MacLean. In the official records of Holyrood Palace, seat of the Scottish kings, is this information, laid before the Privy Council on January 3rd, 1591:

That in the preceding October, Lachlan MacLean "accompanied with a great number of thieves, broken men and ... of clans, besides the number of one hundred Spaniards, came to the properties of His Majesty, Canna, Rum, Eigg and the Isle of Elenole, and after they had wracked and spoiled the said islands, they treasonably raised fire, and in maist barbarous, shameful and cruel manner, burnt the same island, with the men, women and children there, not sparing the youths and infants; and at the same time past came to the Castle of Ardnamurchan, besieged the same, and lay about the said castle three days, using in the meantime all kinds of hostilities and force, both by fire and sword.... The like barbarous and shameful cruelty has seldom been heard of among Christians in any kingdom or age."

On the 20th of March, 1588, King James "granted a remission to Lachlan MacLean of Duart for the cruel murder of certain inhabitants of the islands of Rum, Canna, and Eigg," but from the remission was excepted the "plotting or felonious burning and flaming up, by sulphurous powder, of a Spanish ship and of the men and provisions in her, near the island of Mull."

Swift and tragic as was the fate of Captain Pareira and his ship's company, it was perhaps more merciful than that which befell the great squadron of galleons of the Armada that were cast on the coast of Ireland, on the rocks of Clare and Kerry, in Galway Bay, and along the shores of Sligo and Donegal. More than thirty ships perished in this way, and of the eight thousand half-drowned wretches who struggled ashore no more than a handful escaped slaughter at the hands of the wild Irish who knocked them on the head with battle-axes or stripped them naked and left them to die of the cold. Many were Spanish gentlemen, richly clad, with gold chains and rings, and the common sailors and soldiers had each a bag of ducats lashed to his wrist when he landed through the surf. They were slain for their treasure, and on one sand strip of Sligo an English officer counted eleven hundred bodies.

In a letter to Queen Elizabeth, Sir E. Bingham, Governor of Ulster, wrote of the wreckage of twelve Armada ships which he knew of, "the men of which ships did all perish in the sea save the number of eleven hundred or upwards which we put to the sword; amongst whom there were divers gentlemen of quality and service, as captains, masters of ships, lieutenants, ensign bearers, other inferior officers and young gentlemen to the number of some fifty.... which being spared from the sword till orders must be had from the Lord Deputy how to proceed against them, I had special directions sent me to see them executed as the rest were, only reserving alive one Don Luis de Cordova, and a young gentleman, his nephew, till your Highness's pleasure be known."