Thank you for your informational post. It is apt to provoke much discussion here at the Vansickle GenForum--and this, by itself, adds much value.
I cannot "sign-on" to much of the information concerning either the pre-American incarnations of the Van Sighelen family (to use the spelling use by Ferdinandus^1 in his signature in 1652). This includes any proposed connection between said "Ferd" and Zacharias Sickel (var. sp.). I have seen no credible documentation that any such connection exists.
Very surely, I can strongly suggest that the ancestry of Anthony van Salee as noted in your post is not so, to the degree that the information seeks to connect him to the Rapalje family. This is a Louis de Boer-generated hoax, together with the beggar badge "stuff" and et cetera.
On the Van Sickle[n]-turned-Sickel idea. I ocassionally submit to folks the genealogical challenge to show conclusively that any Van Sickle[n] family ever "dropped" the Van from their surname. It is demonstrable that certain branches of the Zacharias Sickel, did, actually, adopt the "van" to their name (I left a long post on this subject over at the Sickles GenForum, which has some good information on Gen. Dan and his family). That is, Gen. Dan is a descendant of Zacharias and has no apparent connection to the descendants of Ferd VS.
And, really, this is the test. From what I can gather on the Internet, General Dan did not drop the van, nor did his father, nor his grandfather. I have not gone further back on the General's line, but would submit that if one can show that this line ever "had" the 'van', it was an adoption.
Because of other endeavors, I have given over my Van Sicklen research to others who are better able to devote the time necessary to both document the the Van Sickle[n] family and to de-construct the unfortunate "marriage" of the family Van Sicklen with the family Sickel in the family lore.
Glenn, I hope you will take this in the spirit in which it is intended. I know from my own experience how hard it is sometimes to extract the proveable from the oft-repeated lore surrounding our family. It is obvious to me that you are quite scientific in your approach. This will stand you in good stead as your research continues. It is important to microscopically question any assertions about this family that were published before, say, 1945. It was during this period that the all-important "Dutch Naming Conventions" were identified, qualified and documented. It is from these conventions that we can begin to understand the evident facts--and to discern the flaws in the all-too-often repeated family history.
If you or others reading this reply would like to be in touch with those Ferd VS descendants for whom well-documented and modern genealogy on the family is paramount, please email me privately for their addresses.
Most sincerely yours,
Richard Alan McCool Great-grandson of William Alonzo Van Siclen, of Long Island