The John Johnson reference article from the English Wikipedia on 24-Apr-2004
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John Johnson

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John Johnson (-1723) was Seigneur of Sark from 1720 to 1723.

The colonel and former commander of the garrison in Guernsey bought the fief from John Carteret in 1720.

Preceded by:
John Carteret
Seigneur of Sark Succeeded by:
James Milner