Justice claims he was a “Merchant of London and of a cadet branch of the Dungans of Dublin, ennobled by Queen Elizeabeth”, the son of Thomas Dungan of Lincoln’s Inn and part of a long royal ancestry. However, the parentage of William is unproven. The son of Thomas died in battle in 1645, not in London in 1636. See http://freepages.genealogy.rootsweb.com/~mylines/dungan_royal_myth.htm for a longer explanation.

What can be said of Wiliam is he was a perfumer and the family resided in the St. Martin’s in the Fields parish in London. William never went to the US, but his son Thomas’ left numerous descendants.

In the name of God amen, I, William Dunghen, of the parish of St. Martins 'the Fields, in the County of Middlesex, Perfumer, being sick of body, but of good and perfect memory and understanding (thanks be given to Almighty God therefore doe make and ordaine this my last Will and Testament, in manner and forme following, That is to saye, First and principally, I commit my sole unto the hands Almighty God, my Maker, Saviour and Redeemer, through whose mercies and merits , I hope to be saved and to enjoy everlasting life in his heavenly kingdome. My body I commit to earth from whence it came to be buried at the discretion of my loving wife and executrix, here under named. And for my wordly goods wherewith God hath endowed me (my just debts being first paid and funeral expenses discharged I give and bequeath to each of my children, viz: Barbara Dunghen, William Dunghe Frances Dunghen and Thomas Dunghen, three score and ten pounds apiece, to paid unto them when they shall attaine to their full ages, or daye of marriage. if it happen, any of my said children shall dye before they come of age or happen marry, then my will and meaning is, that the part or porcion of him or her, or the soe dyeing, shall revert and come to the survivor or survivors of my said children to be equally divided part and portion alike between them. Any my further and meaneing is, that my said wife shall dureing her widdowhood, have the governing of my said children's porcions, then my true intent and meaning is, that my said wife shall give good security to my overseers hereunder named, for the true and sure payment of the said legacies bequeathed to my said children as aforesaid according to my true intent and meaneing herein expressed. Item: All other my estate, whatsoever be it, in goods, chattels, leases, ready money, plate, or other my substance what ever, I bequeath to my loveing wife Frances Dunghen, whome I make full and executrix.
 
William Dunghe

Referred to by Gary Boyd Roberts as "Rhode Island ur-Mother" for the large numbers of her descendants in the state. See Chapter 48 of Notable Kin, Vol. 2, which treats the descendants of Capt. Jeremiah Clarke.

Tombstone:
Here Lyeth ye Body of.
Mrs. Francis Vaughan
Alius Clarke ye Mother
Of ye Only Children of
Capn. Jeremiah Clarke
She dyed ye 1 week in
September 1677 in ye 67th
Year of her Age.