King Robert the Bruce died in 1329, and Sir Allan of Cathcart and Sir James of Douglass sailed in 1330 for the Holy Land with the King's heart. Sir James was killed in Spain in conflict with the Moors, and Sir Allan came back with the heart of the King, which was buried in Melrose Abbey. The pillar commemorates his safe return. On the west buttress of the north transept, at 21 feet in height, is the shield of the Stewarts, with a pastoral staff, and the word "Stewart." The first central tower erected over the crossing seems to have been of inferior workmanship and to have given way. Another is believed to have been erected by Abbot Tervas, which probably fell during the siege by Lennox and Glencairn, and may have destroyed much of the choir and transept in its fall. Western towers appear to have been contemplated. "We are only able," says Dr. Cameron Lees, "to conjecture what was the position of the conventual buildings. But after comparing the plan of Wenlock, from which the monks originally came, with that of Crosraguel, which they afterwards erected, we think it is probable that the chapter-house, with Saint Mirin's Chapel, occupied the east side of the cloister court, the refectory the south side, and the dormitory the west. The Abbot's house probably stood at the south end of what is called Cotton Street. There were buildings also between the Abbey and the river Cart attached to the monastery, portions of the foundations of which are occasionally uncovered."[404] "The shape of the cloister court has been partially retained. The conventual buildings were almost all converted after the Reformation into dwelling-houses, and though fragments of the old houses, such as an occasional pillar or arch, are to be found, there is little to remind one of dormitory, parlour, or refectory."[405]