General Notes

Obviously there is a great deal of confusion over everything about Maud, but her first name--and that one of her husbands, at least, was John le Strange.  Following are what some respected sources state:

Ancestral Roots (249-32) merely states "Maud de Walton" (no parents, which at least is the simplest way of dealing with Maud).  They cite as source "(CP [Complete Peerage] XII (1) 353, 354; C. L'Estrange Ewen, 'Observations on the LeStranges' (1946), chart opp. p. 1; 'LeStrange Records', 184-254)."

Magna Charta Sureties (137-4) states "Maud, perhaps, a de Deyville. (CP XII (1), 352-353; 'Misc. Gen. et Her.', 5th Series, IX 254-8 says she was daughter of Sir John de Wauton of Wauton Deyville. See also 'Pedigree and Progress' (Wagner) ped. 57; 'Le Strange Records, 184-253)."

Note: other than a slight difference in page numbers, some commas, and Le Strange with or without a space, they seem to be quoting pretty much the same sources.  MCS suggests she is daughter of Deyville, but gives the text of the source which suggests Sir John de Wauton.

Burke's Peerage states "Maud, daughter and heiress either of Roger de Deyville, of Walton Deyville, Warwicks, or of Ebles de Montibus, of Ketton, Rutland, leaving (presumably by his 2nd wife, since her putative paternity would account for the unusual forename Ebles being given to the 2nd son)."

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It looks like we have 3 choices for Maud: de Walton or Wauton, de Deyville, or de Montibus.  I am definitely tilting toward "Maud de Wauton" since I found the following at the Stradling family website "www.stradling.org.uk/docs/Oth_recs.htm", which touches on the matter because Maud de Wauton married John de Stradling as her first husband. The website is quoting material from "VCH - Warwick extract":
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Victoria County History of Warwickshire.

A) vol 3, page 131
"Certain lands in Losley [Loxley, of Robin Hood fame] were sold with the manor of Walton Mauduit by the Earl of Warwick to Simon de Wauton, Bishop of Norwich (1258-66). The bishop conveyed them to John de Wauton, who was probably his great-nephew. Subsequently John de Wauton received from Walter Giffard, Archbishop of York (1266-79), a grant of the two Walton manors and all his land in Loxley; this was possibly the carucate and 100s. in rents which Henry le Foun and Isabel his wife quitclaimed to the archbishop in 1278. The archbishop was perhaps acting as trustee for John de Wauton whose daughter and heir Maud, was in 1279 a ward of Godfrey Giffard, Bishop of Worcester, Walter's younger brother. Maud married, first John de Stradling by whom she had no issue, and secondly John le Strange. In 1294 it was said that John de Wauton had done homage for his land in Loxley to the Prior of Kenilworth and that John de Stradling had offered to do so, but that, as he had had no issue by his wife, the prior was unwilling to receive it."

B) Vol 5, page145,
"The history of the portion of Wellesbourne north and east of the Dene Brook is obscure. Dugdale's assertion that it was granted by one of the ancient Earls of Warwick' to a member of the Hastang family is based only on the fact that in 1279 a very small estate, half a virgate, in Little Wellesbourne was held by Godfrey Giffard, Bishop of Worcester, of William Pacy, who held of Robert Hastang and he of the earl; if there was any such mesne lordship it has left no trace. In January 1246 Mr. Simon de Wauton (or Walton) received a grant of a weekly market on Wednesday and a fair on the eve and day of SS. Peter and Paul at his manor of LITTLE WELLESBOURNE. This Mr. Simon, who bought property in Walton Deyville, became Bishop of Norwich in 1258 and died in 1265. His successor Sir John de Wauton died in or shortly before 1277, leaving a widow Isabel, who married Henry le Foun, and a young daughter Maud. She married Sir John de Strattelinges, or Stradling, and they had a regrant of the market and Fair at Little Wellesboume in 1290. Sir John was dead by February 1293 and Maud married John Lestrange of Knockin, who died in 1309, leaving a son John. As her third husband she married Thomas Hastang, who was returned in 1316 as holding Walton with the hamlet of Wellesbourne, which from this time onwards becomes known as WELLESBOURNE HASTANG, or more often HASTINGS, or WELLESBOURNE LESTRANGE, and descends with the manors of Walton.

In 1086 the Count of Meulan held two estates of WALTON. One of these was rated at 5 hides and had been held by Saxi; the other, formerly held by Gida and Saied, was of 10 hides. Both came to the Earls of Warwick and in 1166 Earl William, in the return of his fees, notes that Walton used to render the service of one knight's fee but was then in demesne and held by his mother, the Countess Gundred, in dower. The overlordship continued attached to the earldom and is mentioned as late as 1639.

In the time of Henry I one part of Walton seems to have been held by Theodoric, or Tierry, and the other by Spilebert. When the family of Deyville, from whom the manor of WALTON DEYVILLE acquired its name, became enfeoffed here is uncertain, but Walter Deyville gave the tithe of his mill at Walton to the nuns of Pinley, probably about 1230. Robert Deyville was holding a knight's fee here from the Earl of Warwick in 1242 and Walter was granted free warren in his manor of Walton in 1252. His successor, Roger Deyville, became heavily indebted to the Jews and sold the manor to Simon de Wauton, who granted it to his son John. This Simon may have been identical with the Mr. Simon who held the manor of Welles-bourne Hastings (see above) and who in 1240 bought from William Mauduit and Alice his wife 6 acres in Walton called Litlemede lying beside the Portwey. Mr. Simon was elderly when he became bishop and may well have been married when young. John de Wauton died in 1277, and his widow Isabel married Henry le Foun. John's heir, his daughter Maud, was a child, and in 1278 Henry and Isabel conveyed the manors of Walton and other lands to Walter Giffard, Archbishop of York. On the death of Walter in the following year these estates passed to his brother Godfrey Giffard, Bishop of Worcester, who in 1281 conveyed them to Robert Burnel, Bishop of Bath and Wells, for life, with remainder to Maud, whom he undertook to marry to one of the elder sons of either his brother Hugh Burnel or of Sir Robert de Escales. As already mentioned, however, Maud married first Sir John de Strattelinges and secondly John Lestrange of Knockin, and thirdly Thomas Hastang."