See the attachment at https://www.geni.com/documents/view?doc_id=6000000191975277822
This attachment is an original document part of the Indian-Pioneer Papers Collection at the University of OK in Norman.
There is a My Heritage site that has images of these four pages and has them marked specifically NOT Jefferson Porum Davis. But as can be seen, these documents specifically use the name Jefferson Porum Davis along with J. P. Davis.
One possible reading of this document is that Jefferson Porum Davis founded the burial ground in 1870 in anticipation of the death of John Porum Davis which happened Nov 22, 1880.
The document begins “the Porum-Davis burial ground is the family burial plot of Oo-La-Sota, or Jefferson Porum Davis, a full blood Cherokee, born east of the Mississippi River in 1826… he was prominent among his people and active in tribal affairs…Access Genealogy in a list of “Senators Of The Cherokee Nation” shows John Porum Davis in 1867. 1873, and president in 1875 and 1879.
The birth dates and date of death match that of our profile for John Porum Davis. The name Oolasota does not seem to appear in other contemporary documents, so I’m not sure where the researchers for this cemetery project find that name. There are 5 other graves in this burial ground. It's located near the Porum Davis home…
Starr has John Porum Davis as the husband of Eliza Bowles, but this document lists as wife Nancy Bloes daughter of Ellen, could Ellen and Eliza be the same person? This Ellen was killed in Texas “in the company of Teasy Gist, son of Sequoyah” (according to Starr Eliza was a niece of Tee-See Guess) The Access Genealogy list of senators has a Teesee Guess as Senator in the Canadian District, Cherokee Nation-Indian Territory, OK in 1853.
Information needed to clarify the profile for Oolasota 'John Porum' Davis, Senator from the Canadian District @ John Porum Davis, Senator from the Canadian District
An interesting side story perhaps, but I’ve yet to find a link between the families, is “THE BLOODY PORUM RANGE WAR”…”The four Davis brothers - Cicero, Sam, Jack and Bob - were among the biggest ranchers in eastern Oklahoma. They were mixed-blood Eastern Cherokees, proud of their Indian heritage, who had come to what was then Indian Territory in the 1880s looking for land and a new life. Although the Dawes Act of 1887 had parceled out the land in Indian Territory, the Davises continued to graze and gather cattle from what they perceived as open range into the 20th century…”