(1) We are following TCP (Boteler of Wem) and BE1883 in showing this William as married only once, to Margaret FitzAlan. Visitation shows the same but, as it shows William as son of the Ralph who married Maude Pantulf, thereby missing out 2 generations, it loses some credibility. Visitation shows this William as father of another William (m. Ella Handslagh or Hansacre) who had 2 sons: William who married Johanna Sudeley and Ralph, who married _ Hanlow, father of the heiress Elizabeth.
(2) BE1883 (Boteler) identifies the following William's wife as Joane Sudeley, dau of John, Lord Sudeley, but does not report having a son by her, only his dau/heiress Elizabeth. BE1883 (Sudeley) identifies Joan's husband as "William Boteler, of Wemme", showing them as having a son Thomas who inherited Sudeley Castle. TCP (Boteler of Wem) identifies (the following) William's wife merely as "Elizabeth" and confirms that they dspm.
(3) It appears that some sites identify Joan Sudeley as second wife of this William (2nd Lord), possibly in an attempt to explain why the barony of Wemme did not pass to Thomas, son of the William who married Joane Sudeley. Joan's husband is described in TCP (Sudeley) as "William le Botiler (Boteler), knight" which refers by note to Dugdale's 'Baronage' (vol i) where this William is shown as having had 2 sons both called William, the younger married to Joan Sudeley. We are suspicious about this and provisionally continue to show this 2nd William and his descendants on 'Sudeley1'.