Thanks, I got it (and also fixed it going to the wrong page) now have Hoff, Henry B. ''Genealogies of Long Island Families; From the New York Genealogical and Biological Record. Vol II Praa - Youngs'' (Baltimore, MD: Genealogical Publishing Co, Inc, 1987), Early History of the Thorn Family of Long Island, compiled by Thorn Dickinson, p. 334; digital images, Ancestry : accessed 26 Nov 2019) {{Ancestry Image|48330|LongIslandFamII-001365-334}}
I'm pretty sure that I was interrupted while working on the profile. Or it was a case of DWWT (Don't WikiTree While Tired). Interesting that when I tried, in edit mode, to FindInPage using Chrome on an iPad that it didn't find the string of characters cestr. You would think someone with years of experience with parsing software would know better.
And thanks so much for all the validation applied to WikiTree content!