I don't see a lot of additional data added!
I have found a few additional facts:
* Behind an Ancestry paywall is a baptism for Carl Sebastian, born Jan 16, 1726 - https://www.ancestry.com/mediaui-viewer/tree/107963144/person/300062275009/media/c75a68ff-8da3-4bd7-80ba-108e37e647ec?_phsrc=FmH1209&_phstart=successSource I believe this says that his father Andreas was a butcher.
* There was a Carl Kayser who came on the "Patience" in 1749 - https://archive.org/details/pennsylvaniagerm03penn_2/page/408
* “The Earliest Records of the Evangelical Lutheran Church of the Holy Trinity, Lancaster, Pennsylvania Vol. 2” translated by Frederick S. Weiser. It had the following entries on page 347-349 & 370:1. “From January 1, 1750 on, the following announced themselves for Holy Communion: #55 Carl Sebastian Kayser, recently arrived. Servant of Jacob Eichholtz.”2. “Those who have announced themselves to go to Holy Communion on Estomihi Sunday, February 17, 1751: # 21 Carl Sebastian Kayser, with Jacob Eicholtz.”
* Didn't access the original but " Will of Christian Shelly dated 22 April 1760, Lancaster Co., Pennsylvania. In it he mentions his wife Magdalen, children: Jacob; Catharina (and son-in-law John Gingry); Mary; Anna; Margret; Elizabeth; Ester; Frena; Susanna; and Christian. Then on 6 June 1761 we have the deed of Charles Kyser to Elizabeth Shelly. Here it states that Charles Cayser and Mary his wife, late Mary Schelly, Margaret Haldiman, widow, late wife of John Haldiman deceased and formerly Margaret Shelly, Samuel Huber and Esther his wife, late Esther Shelly, John Reisar and Catharine his wife, late Catharine Schelly and Susanna Shelly all of the County of Lancaster inherited the 78 acres of Jacob Shelly because he had died intestate and unmarried. They in turn sold their parts to Elizabeth Shelly." (http://pennsylvaniasettlers.com/getperson.php?personID=I24786&tree=1)
* A Charles Keyser was in Virginia by 1765: "deed recorded in Frederick County, Virginia on 6 April 1765, deed book No. 10, page 248, Lewis Rhinehart and Mathias Rhinehart of Frederick County, Va., conveyed unto Charles Keyser, of the same place, a parcel of land on the South Fork of the Shenandoah. This deed is transcribed on our website."(Same as above)
* The grave marker for Charles in Virginia is clearly too new to be original. It gives his birth as 1702, although FAG has reported his birth as 1726. The grave marker must have been installed when the remains were reinterred much later, or even later than that.
* The widow of Charles Kayser in Virginia is listed as Elizabeth here: https://www.wikitree.com/photo/jpg/Keyser-337-1
I am editing this entry to add a few thoughts here.
I don't think this is evidence for Elizabeth Grossglos at all. The entry for "a partial settlement of Charles Keyser estate, Elizabeth Keyser widow and relict" comes immediately after the entry for "September 12, 1796, appraisement of Charles Keyser, Junior's estate."
I think "Elizabeth widow and relict' is Elizabeth Baker widow of Charles Keyser Jr.
Does anybody have any additional known facts to add to this, or does anyone have any issues with these facts?
It appears to me that there is no real evidence for the 1702 birth date other than the memories of descendants in the 1880's.
And no hard evidence at all for a wife Elizabeth.
Perhaps we are looking at one Charles Keyser and wife Mary Shelly?