Some corrections and additions to the Complete Peerage: Volume 5: Giffard (PROPOSED CORRECTIONS)

GIFFARD

Volume 5, pages 639, note c:
The Elis [IV] living in 1221 was s. and h. of Elis III, by Maud, da. of Morice fitz Robert fitz Hardinge, of Berkeley ...

Ivor West stated, in June 2002, that Elis IV and his sister Bertha were the children of Elis III by an unknown wife, not by Maud.

Pages 642, 643 (as modified by volume 14):
He [Sir John Giffard (d. 1299)] m., 2ndly, in 1286, Margaret, widow of Sir John DE NEVILLE (father of Hugh, 1st LORD NEVILLE of Essex), of Hallingbury, Wethersfield, Great Totham, Great Wakering, and Langham, Essex, Alphington, Devon, &c. (who d. shortly before 20 May 1282).

On Margaret's identity, see Neville of Essex, vol. 9, p. 483.