Research Notes:
Lincolnshire Pedigrees states that Sir Thomas Barnardiston married Joanna, daughter and coheir of Sir William Frank of Grimsby, Knight, by a daughter and heir of Sir Marmaduke Tunstall. [1]
[1] Canon A. R. Madison, ed., Arthur Staunton Larken, Lincolnshire Pedigrees, Vol. 1 (London: Harleian Society, Vol. L, 1902), 90, pedigree of Barnardiston of Great Cotes, Lincoln; Kedington or Ketton, Suffolk; and of Ryes Lodge, Essex, [GoogleBooks].