Glencardine was a stronghold feared by all the surrounding nobles, and its men were full of valour and bravery. One story of them is perhaps worth the telling. In the year 1490 the all-powerful Abbot of Inchaffray issued an order for the collection of the teinds of the Killearns' lands possessed by the Grahams of Glencardine in the parish of Monzievaird, of which he was titular. The order was rigorously executed, the teinds being exacted by force.
Lord Killearn of Dunning Castle was from home at the time; but in his absence his eldest son, William, Master of Dunning, called out a number of his clansmen, and marched towards Glencardine for the purpose of putting a stop to the abbot's proceedings. The Grahams of Glencardine, having been apprised of their neighbour's intention, mustered in strong force, and marched to meet him. The opposing forces encountered each other at the north side of Knock Mary, about two miles to the south-west of Crieff, while a number of the clan M'Robbie, who lived beside the Loch of Balloch, marched up the south side of the hill, halting at the top to watch the progress of the combat. The fight began with great fury on both sides. The Glencardine men, however, began to get the upper hand and drive their opponents back, when the M'Robbies rushed down the hill to the succour of the Killearns. The tables were now turned. The Grahams were unable to maintain their ground against the combined forces which they had now to face, and fled towards Glencardine, taking refuge in the Kirk of Monzievaird. The Killearns had no desire to follow up their success any farther, but at this stage they were joined by Duncan Campbell of Dunstaffnage, who had come across from Argyllshire to avenge the death of his father-in-law, Robert of Monzie, who, along with his two sons, had a short time before been killed by the Lord of Glencardine.
An arrow shot from the church fatally wounded one of Campbell's men, and so enraged were the besiegers at this that they set fire to the heather-thatched building. Of the one hundred and sixty human beings who are supposed to have been in the church, only one young lad escaped, and this was effected by the help of one of the Killearns, who caught the boy in his arms as he leaped out of the flames. The Killearns did not go unpunished for their barbarous deed. Their leader, with several of his chief retainers, was afterwards beheaded at Stirling, and an assessment was imposed on the Killearns for behoof of the wives and children of the Grahams who had perished by their hands.
The Killearn by whose aid the young Graham had been saved was forced to flee to Ireland, but he afterwards returned to Scotland, where he and his attendants were known by the name of "Killearn Eirinich" (or Ernoch), meaning Killearn of Ireland. The estate which he held, and which is situated near Comrie, still bears that name. The site of the Kirk of Monzievaird is now occupied by the mausoleum of the family of Murray of Ochtertyre, which was erected in 1809. When the foundations were being excavated a large quantity of charred bones and wood was found.
The history of Scotland is full of references to the doings at Glencardine, the fine home of the great Lord Glencardine, and of events, both in the original stronghold and in the present mansion, which have had important bearings upon the welfare of the country.
In the autumn of 1825 the celebrated poetess Baroness Nairne, who had been born at Gask, a few miles away, visited Glencardine and spent several weeks in the pleasantest manner. Within those gaunt ruins of the old castle she first became inspired to write her celebrated "Castell Gloom," near Dollar:
Oh Castell Gloom! thy strength is gone,
The green grass o'er thee growin';
On Hill of Care thou art alone,
The Sorrow round thee flowin'.
Oh Castell Gloom! on thy fair wa's
Nae banners now are streamin';
The howlit flits amang thy ha's,
And wild birds there are screamin'.
Oh, mourn the woe! oh, mourn the crime
Frae civil war that flows!
Oh, mourn, Argyll, thy fallen line,
And mourn the great Montrose!
The lofty Ochils bright did glow,
Though sleepin' was the sun;
But mornin's light did sadly show
What ragin' flames had done!
Oh, mirk, mirk was the misty cloud
That hung o'er thy wild wood!
Thou wert like beauty in a shroud,
And all was solitude.