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Support for the Covenant grew under the leadership of James Graham , 1st Marquess of Montrose and Archibald Campbell , 8th Earl of Argyll , while soldiers serving abroad returned to Scotland , including General Alexander Leslie .
 Covenant, James Graham , 1st Marquess of Montrose, Archibald Campbell , 8th Earl of Argyll, Scotland, Alexander Leslie
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Covenant, James Graham , 1st Marquess of Montrose, Archibald Campbell , 8th Earl of Argyll, Scotland, Alexander Leslie