Based on this WikiPedia article, Susanna (or Susanne) purchased the fief of Seigneur of Sark from Joseph Wilcocks, the incumbent Bishop of Gloucester, in 1733. Nicholas cannot have held the title.
This person was created through the import of Tonkes_Morris_Ryles_Ellis.ged on 16 March 2011. The following data was included in the gedcom. You may wish to edit it for readability.
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Nicholas is 44 degrees from Rosa Parks, 23 degrees from Anne Tichborne and 26 degrees from Victoria of the United Kingdom of Great Britain and Ireland on our single family tree. Login to find your connection.