The short answer is "I don't know". But not knowning "nuthin" has never stopped me from speculating. There were at least two Stephen Debords in Pulaski.One was the son of Reuben Debord b 1783 as proven by his will in 1857.I believe the son of Reuben was probably the Stephen Wm Debord b 1813 in VA that eventually went to Lavaca Co TX. Reuben first shows on the Pulaski Ky tax records in 1815 (prior to that I believe this is the Reuben that show in Grayson Co VA records and a brief time in Ashe Co NC). Reuben died 21 July 1857 in Pulaski.
If I'm correct on above assumption that the Stephen born 1813 was the son of Reuben, then by a process of elimination and circumstantial evidence, I believe your Stpehen b 1805 was possibly a son of the George Debord b ca 1773. I hope I've put enough qualifiers here that noone will accept this as gospel.
I further believethis is the George that shows on the 1810 census for Burke Co NC with a family that included 4 males less than 10 yrs old.I believe this is also the George that shows first on the Pulaski Co tax list in 1813 with 100 acres on Brush Creek. George shows on the Pulaski tax list through at least 1845 and his widow Catherine shows on the 1850 and 1860 Pulaski census living with one of her children.I assume this George died shortly after 1845.
There was a Stephen Debord that shows on the Pulaski Co tax lists in 1828, 1829 and 1830; and I believe that was probably your Stephen b 1805; the other Stephen would have been too young.There was also a Stephen Debord that shows on the 1835 and 1837 Rockcastle Co tax list; and I believe that's the Stephen born 1813 aon of Reuben. Reuben Debord shows on the Pulaski Co tax lists until 1833 where he shows with 3 pieces on property; one on Brush Creek in Pulaski and 2 on Scaggs Creek in Rockcastle. 1833 is the last time I've found Reuben on the Pulsaki tax lists until he returns in 1852.Reuben first shows on the Rockcastle Ky tax list in 1820 and shows on most of the Rockcastle Co Ky tax lists through 1851. Reuben shows on both Pulaski and Rockcastle tax lists between 1820 and 1833, so not sure when he moved to Rockcastle.Reuben does show on the 1820 Pulaski Census, then the Rockcastle census for 1830, 1840 and 1850; then his widow shows on the 1860 and 1870 Pulaski Census.
So, when did your Stephen come to KY.Probably about 1813. Not sure when he moved to Brown Co Indiana but probably about 1830 or 1831. His oldest son James b abt 1830 sometimes says he was born in Kyand sometimes says he was born in IN;census records for 2nd son George W b 1831 are consistant that he was born in Indiana.
I beleive your Stephen is also the one that shows on the 1840 Brown Co Ind census; the 1850 census for Peoria IL; Haven't found him in the 1860 census; but his kids show in Illinois, Iowa and Oregon. This may be the Stephen and Mary Debord in the 1870 Howard Kansas census; then in 1880 Delphia is listed with her sister Neoma Skidmore in Lucas Co Iowa; there is also a Stephen Dubord listed as a widower in 1880 census for Saguache Co Colorado.There was also a Stephen Debord that served in the Mexican war of 1848 and a Stephen Debord that appears on a list of pensioners for Chatuaqua Co Kansas in 1883.I think all of these records are probably for your Stephen.