sentences:  The last provost, Robert Douglas, left about 1590, ownership then passed to the Catholic Maxwells of Terregles.The collegiate church’s domestic ranges were converted into a tower house, which was abandoned by the late 1600s.Thomas Pennant in his "A Tour of Scotland, and Voyage to the Hebrides" in 1772 wrote, (of "Princess" "Margaret's tomb" ) " "her bones till lately, were scattered about in a most indecent manner by some wretches who broke open the repository in search of treasure.""