I would propose that Ann Daux was more likely born around 1655 and was clearly born in Virginia of English parents.As far as I am aware, Walter Daux never appears in any record as "John".
Beverley Fleet's "Virginia Colonial Abstracts", Volume III, contains abstracts of most of the few existing 17th century Charles City County records. There are several court records in the period 1658-1660 which clearly establish that Mary (maiden name unknown) Daux was first the widow of Robert Plaine, by whom she had one child, John Plaine, and was then remarried and widowed again the widow by Walter Daux, by whom she had two children, Ann and "Susan". She married thirdly, John Flower, by 24 May 1658 when Flower was appointed administrator of Walter Daux and had "married the relict".Later court records refer to the two orphan daughters of Walter Daux.The same source has several references to a modest shipment of tobacco that Walter Daux had shipped, prior to his death, to his father Richard Daux in London. Finally, there is a record dated 3 October 1673 of a petition by Richard Rawlins and John Witt. The subject is unknown, but is made clear by later citations.
McIlwaine's "Minutes of the Council and General Court of Colonial Virginia, 1622-1632, 1670-1676" has three references in 1674 and 1675 to a suit by “Jno. Witt and Richard Rawlins who marryed the two orpts. of Walter Daux, dec’d”. In the third mention, the plaintiffs are John Witt and "Susannah" Rawlins, Richard Rawlins evidently having died between October 1673 and March 1674. There is no record of the disposition of the suit.
Margaret Mitchel Ayres' "Charles City County Order Book 1676-1679" contains one last reference, to a 1678 suit by John Witt and John Turberfield (or Turberville, it's shown both ways) in which they identify themselves as the husbands of the heirs of Walter Daux, and claim John Flower wasted their legacies. John Flower was apparently dead, as they sued the men who had been justices back in 1658 for failing to require a bond of Flower's administration of the Daux estate.
Fleet's abstracts contain several additional references to Rawlins and Turberville of a relatively minor nature.
Virginia patent books contain references to a Henry Dawkes, who made a bill of adventure in 1608 with the London Company.His son William Dawkes obtained a patent in 1632 less than two miles from where Walter Daux later settled, as heir of his father Henry.
There are two patents which claim importation of a Walter Daux, one in 1633 and another in 1664, both patents for adjoining land.Whether this was one person or two people is unknown.
That is the sum total of our knowledge, due to the large gaps in the surviving records of Charles CIty County. Clearly, one of the daughters was either "Susan" or Susannah" - the name appears only once each way in the records. Richard Rawlins was her first husband and John Turberville the second. We also know from Fleet's abstracts that Turberville deposed himself to be aged 24 years in 1673. From that, we might propose that Ann and Susan(nah) Daux were born around 1655, and were perhaps still minors in 1673 -- it seems plausible that their husbands could file suit, but as single women they were not yet old enough to do so prior to their marriages.