Osmond de Stuteville, progenitor of the Stutevilles of Weston Colville and Burton Agnus

Although the Latin forms of Stutvilla, Stotvilla and Estotvilla are used indiscriminately, it is convenient for purposes of distinction to restrict the form Estouteville to the Norman/French lines descended from Nicolas d’Estouteville, lord of Valmont. Further, the use of de Stuteville is restricted to the English descent from Robert III de Stuteville and his brothers.

from fmgMedlands 6. [OSMOND d’Estouteville . Morandière names "Robert, Richard, Osmond, Patrick, Jean et Eustache" as the sons of "Robert II le jeune d’Estouteville" and his [second] wife Erneburg, adding that "ils nous sont donnés par les généalogies anglaises" but without citing the corresponding primary sources[278].]

from Early Yorkshire Charters