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Marriage:
Bibliography
  1. Best, Jane Evans, The Groff Book, Volume 2, A Continuing Saga, Ronks, PA: Groff History Assiciates, 1997. NYPL APV (Groff) 86-1589 v2. Information from this source tagged as [Ref: Best GROFF p[0-9]*].

Sources with Information about marriage to Margaret TROXEL
names:
[Ref: Best GROFF p100]
Research Notes:



Pedigree of John MARKS
John MARKS



Descendants of John MARKS
1. John MARKS m. Margaret TROXEL
m. Margaret TROXEL father: John TROXEL mother: Elizabeth GROFF