Barnfield and Rodriguez Family Trees

From a genealogical website (http://sbaldw.home.mindspring.com/hproject/prov/sprot000.htm)

Wife or concubine of Guillaume (William) "Longsword" (of Normandy), 10th century.

Called a Breton concubine by Flodoard [s.a. 943: "Rex Ludowicus filio ipsius Willelmi, nato de concubina Britanna, terram Nortmannorum dedit; ..." (clearly referring to Richard), MGH SS 3, 389, van Houts (2000), 47], she was first given a name by William of Jumièges [GND iii, 2 (vol. 1, 78-9)], who, writing in the second half of the eleventh century, stated that she was bound to William by the Danish custom ("... Danico more iuncta, nomine Sprota ..."). Although the name "Sprota" gives us a convenient name to refer to the mother of Richard I, the unusual form of the name and the lateness of the source (more than 100 years later) make it uncertain that her name has been correctly reported