This was found on the newsgroup soc.genealogy.medieval for his Deiveill ancestry and some of his descendants:

From: david@hepworth1955.fsnet.co.uk (David Hepworth)
Subject: Re: CP Addition: Margaret, wife of (1) Sir John Deiville and (2) Adam de Everingham
Date: 29 Sep 2004 02:17:50 -0700
References: <fd.2758759.2e888da6@aol.com> <04d301c4a464$4c410170$cd00a8c0@rosie> <2cd16f1b.0409280511.47450fa7@posting.google.com>

Here is the genealogy from Dodsworth for Dayville with some
interesting elements

WYAS Bradford WPB/15/67

Pedigree of Deyville family based on Dodsworth MS3 fols 27b-28.
Corrected by Baildon June 1887.

Please note that the bracketed letters and numbers (eg SSS.32) relate
to the original indexing system that Dodsworth used – these represent
evidences collected and filed at this point. These MS are in the
Bodleian Library Oxford.

1Robert Dayvill antiquers (SSS.32). Married ?

1.1John Dayvill senior son and heir

1.1.1Robert Dayvill son of John called the elder

1.1.2Robert Dayville son and heir of John called the younger

1.1.2.1John Deyvil son and heir of Robert 44 Henry III (SSS.32)

1.1.2.1.1Dom Johannes Dayvill Lord of Egmanton (G.55) married
Margareta who also married Sir Adam de Everingham

1.1.2.1.1.1Sir John Deyvill

1.1.2.1.1.2William Dayville

1.1.2.1.1.1.1Elizabeth, daughter and coheir married Alexander de
Leeds nup. 19 Edward I (G.55). She also married John Chaumont
Chevalier 32 Edward III (G.31)

1.1.2.1.1.1.2Margareta, daughter and coheir married NN de Afford
(?Rufford)

1.1.2.1.1.1.3Elinord married Ricardus de Eskelby

1.1.2.1.1.1.4Agnes married John de Scharow

1.1.2.1.1.2.1Robertus Dayvill Chevalier

1.1.2.1.1.1.1.1Elizabeth daughter and heiress 45 Edward III (Fine 32
Edward III with Alexandre Nevill Chevalier querentem et Radulphum de
Nevill and Elizabetham exorfem deforciants de Man. De Thornton, Gipton
and Kirkby super Moram terre in Mildby…rectis heredibus Elizabetha
(G.31)). She married (a) Ralph fil. Ralph de Nevill of Raby avenculus
of Ralph 1st Earl of Westmorland p. 154). She also married (b) Henry
Gramary as 2nd husband. She also married (c) John Dayvill, husband of
Elizabeth daughter and heiress of Alexander de Ledes (G.55).
Covenants dated 9 Edward III (G.546). John Dayvill was also married
to Margareta – "Margareta uxor John Dayvill de Egmonton 17 Edward II
(EE.III)

1.1.2.1.1.1.1.1(a).1Alexander de Nevill Chevalier 42 Edward III
(G.55) married Margaret

1.1.2.1.1.1.1.1John D=Margareta).1Johanna daughter and heiress 17
Edward II and 24 Edward III (EE.112) married Adam de Everingham of
Laxton Chevalier. Alienated the manor of Egmanton to William de la
Pole Seneschal with warranty against Jane his wife and his heirs by
fine 24 Edward III (E.112)

1.1.2.1.1.1.1.1(a).1.1Alexander de Nevill Chevalier married Katherine
who was relict 16 Richard II.

1.1.2.1.1.1.1.1(a).1.1.1Alexander de Nevill 2 Henry IV married
Katherine daughter of Ralph d'Eure Chevalier 2 Henry IV

1.1.2.1.1.1.1.1(a).1.1.1.1Ralph 17 Henry VI

1.1.2.1.1.1.1.1(a).1.1.1.2William Nevill of Thornton Knight 28 Henry
VI married Alicia

1.1.2.1.1.1.1.1(a).1.1.1.3Alinora married Richard Delawar

1.1.2.1.1.1.1.1(a).1.1.1.4Katherine married William Fairfax of Walton

1.1.2.1.1.1.1.1(a).1.1.1.2.1William Nevell 17 Edward IV married
Johanna fil. Christopher Boynton and Jane ux. Vid 1 Richard III (G.56)

1.1.2.1.1.1.1.1(a).1.1.1.4.1Thomas Fairfax 35 Henry VI (G.83)

1.1.2.1.1.1.1.1(a).1.1.1.2.1.1William Nevell nat. ante 6 Edward IV
married Alicia

1.1.2.1.1.1.1.1(a).1.1.1.2.1.2Ralph (N.17)

1.1.2.1.1.1.1.1(a).1.1.1.2.1.3Galfridus (N.17)

1.1.2.1.1.1.1.1(a).1.1.1.2.1.1.1William Nevill miles

1.1.2.1.1.1.1.1(a).1.1.1.2.1.1.1.1Ralph Nevell of Thornton Briggs
married Anne, daughter of Sir Christopher Wardle of Guiseley Givendale
who was dead 13 Henry VIII (I.6) [Sir Christopher had an elder
daughter Joan who was coheir 2 Henry VII (G.56) et 13 Henry VIII
(I.6). She married Edwardus Musgrave and they had William Musgrave,
who had Sir Richard Musgrave Knight who was dead 11 September 1555
from IPM. He had Thomas Musgrave]

1.1.2.1.1.1.1.1(a).1.1.1.2.1.1.1.1.1Katherine coheiress dead 22 13
Henry VIII (I.6) married Walter Strickland (G.55)

1.1.2.1.1.1.1.1(a).1.1.1.2.1.1.1.1.2Johanna dead 21 13 Henry VIII
(I.6) who married John Constable of Burton Constable.

1.1.2.1.1.1.1.1(a).1.1.1.2.1.1.1.1.3Clara, co heiress, dead 14 13
Henry VIII (I.6) who married Thomas Smith alias Nevell of Holt.


1.1.2.1.1.1.1.1(a).1.1.1.2.1.1.1.1.1.1Walter Strickland

1.1.2.1.1.1.1.1(a).1.1.1.2.1.1.1.1.3.1NN son and heir (G.56)

1.1.2.1.1.1.1.1(a).1.1.1.2.1.1.1.1.3.2Mary daughter and heir married
Francis Hornby and then NN Smith a lawyer (I.6).

1.1.2.1.1.1.1.1(a).1.1.1.2.1.1.1.1.3.2.1Thomas Smyth married Anna
______________

Or a fesse sable with six fleurs de lis countercoloured, two, two and two.

or

Or on a fess betw. 4 fleurs de lys Gu 2 fleurs de lys Or.

VCH, Victoria County Histories, Manor of Thornton Bridge, Yorks North Riding, vol 2, pp. 98-103.

and

The Dictionary of Medieval Arms, Medieval Ordinary, vol 3, pp. 387-8.