Margaret MacDonald was born in 1815 in Port Glasgow, Scotland and died around 1840. She lived with her two older brothers, James and George, both of whom ran a shipping business. Beginning in 1826 and through 1829, a few preachers in Scotland emphasized that the world's problems could only be addressed through an outbreak of supernatural gifts from the Holy Spirit. In response, Isabella and Mary Campbell of the parish of Rosneath manifested charismatic experiences such as speaking in tongues. Around 1830, miraculous healings were reported through James Campbell, first of his sister Margaret MacDonald and then of Mary Campbell (through James's letter to Mary). Shortly thereafter, James and George MacDonald manifested the speaking and interpretations of tongues, and soon others followed suit in prayer meetings. These charismatic experiences garnered major national attention. Many came to see and investigate these events. Some, such as Edward Irving and Henry Drummond, regarded these events as genuine displays from the Holy Spirit. Others, including John Nelson Darby and Benjamin Wills Newton, whom the Plymouth Brethren sent on their behalf to investigate, came to the conclusion that these displays were demonic. Origin of the dispensational pretribulation rapture There have been a couple of attempts to locate a "source" for Darby's concept of the rapture – the belief that a core of Christian believers who have died will be raised from the dead, and believers who are still alive and remain shall be "caught up together with them in the clouds to meet the Lord in the air" () in conjunction with the Second Coming of Jesus Christ. Some of these attempts imply that Darby's concepts originated from a "false" source. Samuel Prideaux Tregelles alleged that The concept was taken from one of the charismatic utterances in Edward Irving's church. Since Tregelles regarded the utterances as "pretending to be from God," his implication is that Darby's rapture is from a demonic source. Dave MacPherson built upon Tregelles's accusation, and argued that the source for Darby's rapture was from an Margaret MacDonald's 1830 vision of the end times. However, scholars think there are major obstacles that render these accusations untenable. It is clear that Darby regarded the 1830 charismatic manifestations as demonic and not of God. Darby would not have borrowed an idea from a source that he clearly thought was demonic. Also Darby had already written out his pretribulation rapture views in January 1827, 3