STEWART, John 'de Menteith' ¹

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  General Notes:

"2. Sir John, who has achieved an unenviable notoriety as the taker or betrayer of Sir William Wallace. His
history has been fully sketched by Sir William Fraser, and need not be detailed here. He was possessor of the lands of Rusky in Menteith, and perhaps also of Knapdale. He died about 1323."

from Scots Peerage (vol 6) ²

John married.