Susan Frost Thanks for highlighting that book, lets take a look at what it contains. The book relies heavily on Somerby's findings to make the connection between the immigrant John Greene and Richard Greene and Mary Hooker.
Example on page 32: “Note — Mr. H. G. Somerby, of Massachusetts, went to England and engaged in genealogical researches for New England families. He made up the records of the Greene family of Warwick and of the Arnolds of Rhode Island to some extent; the Greenes, at the request of Rev. John Singleton Copley Greene, of Boston, and the Arnolds, at the request of Mr. Benj. Greene Arnold of New York, a native of Warwick, R. I. General Geo. S. Greene furnished material for the identifica- tion of both of these families from his collection”
NOTE – the phrase “made up” is quite an amusing choice given what we now know about Somerby’s work, but I think it should be read more as “assembled” or “put together.”
Page 33: “Among the "Abstracts of English Wills" submitted by Mr. Somerby was that of John Greene of Cucklington, County Somerset, husbandman, dated April i6, 1620, proved May 22, 1620, in which he bequeathed to the parishes of Cucklington, East Flower, West Flower, and Gillingham, £30 for the poor; mentions William Greene, Hugh Greene, John Greene, Richard Greene, Simon Greene, and his kinsman, William Nelson of Gillingham; also appoints Morgan Cave of Gillingham one of the supervisors of his will ; all of which may be considered conclusive proof of close relationship between the Somersetshire and Dorsetshire branches. In further support of Mr. Somerby's theory, it may be stated that the second son of Richard Greene of Bowridge Hill, Gillingham, County Dorset, was Robert of Cucklington, County Somerset, the brother of John Greene, the American ancestor, to whom he willed his Latin books. (See "The Greenes of Dorsetshire.")”
Example on page 35: “Mr. Somerby reached his conclusions regarding the descent of Rhode Island Greenes from Thomas, third son of Sir Henry Greene, only after pro- longed search among public records at the Prerogative Court of Canterbury,, London, and at the British Museum, and careful examination of parish registers, wills, etc., in the south of England, aided by considerable corre- spondence with descendants in America. Upon the results of this faithful research he based his firm belief that the Dorsetshire branch of the Greene family were lineal descendants of Sir Henry Greene, Lord Chief Justice of England, through his grandson Thomas, the third son of Sir Henry Greene of Drayton, Northamptonshir”
At the core of this problem is a will which Somerby “found” for Robert Greene of Cucklington (on page 741): “Item: To my brother John Greene in New England all my Latin books if he come for them.” If this were true it would be great, but researchers appear to have not been able to find this document and Somerby’s reputation renders all his work, and those which rely on his findings (such as "Greenes of Rhode Island"), suspect. Because of the “Greenes of Rhode Island” reliance on the work of a known fraud, the book’s contents (at least for the connection in question here) are rendered highly questionable and I would argue unusable. I would stress that the “substantial proof” we need here must come from primary sources, and in particular, finding if the will of Robert Greene of Cucklington even exists and if it actually contains the information that Somerby claimed it did.
Here is some more info on Somerby: https://www.wikitree.com/wiki/Category:Horatio_Gates_Somerby_Fraud