[Footnote 53: The mother of Tancred was Emma, sister of the
great Robert Guiscard; his father, the Marquis Odo the Good.
It is singular enough, that the family and country of so
illustrious a person should be unknown; but Muratori
reasonably conjectures that he was an Italian, and perhaps
of the race of the marquises of Montferrat in Piedmont,
(Script. tom. v. p. 281, 282.)]