To update and correct the information in the above post:
The immigration record is for Jno. J. Aboult, who arrived in Philadelphia aboard the Brig Isabella on July 15, 1807. If this is Jacob Abolt, the u in the surname may have been in the original name, or it may have been transcribed incorrectly; inference to an original spelling of the surname from this entry alone is perhaps a stretch. All other records of Jacob that I have seen use the spelling Abolt.
Census records (1860, 1870?) seem to point to Jacob Abolt being born c. 1781 or c. 1784 in "Frankgonia, GERMANY". Frankgonia is probably Franken (Franconia), which is today in northern Bavaria, but which was not a part of Bavaria until Napoleon's reorganization of Germany (if my understanding of the history is correct).
Jacob's grave is in Indiana. I have been to it but do not remember what date or year is listed for his birth (if it is listed).
Jacob did settle in Indiana (after living in Ohio) in the area in or around Fountain County, but he may have lived or owned land (at least for a time) in another county (or other counties).
Jacob or the Abolt name might be mentioned in a book on the history of Fountain County, which was prepared at the county's centennial. I am not sure of this (I do not know for sure if there is such a book), nor do I know of other histories that would mention him.
Jacob's wife's name is listed as Mary in the obituary for their son, John Abolt. The information I have points to her maiden name being Fosnoth (or Fosnot?, or something similar), but I do not know whether this is reliable.
In the fourth generation listed in the chart, "Wilhamenia" should be Wilhelmina. Russell should terminate in two l's (ll), but I think the name is sometimes spelt Russel in the family bible.
I am not sure what 'very well known' means in the above post, but I do think there are still descendents in Indiana.