i really cant tell, because i joined bitcointalk early this year. but i was able to find a list of some of the Nigerians who i think are the oldest starting from 2016 and are still active on the forum. i also found this leo, who i will say he is the oldest member from Nigeria since he registered in 2012
USER Date of registration
Leo January 23, 2012 - Traderbtcc February 29, 2016
- Adbitco June 04, 2016
- posi June 11, 2016
- Fivestar4evermvp July 30, 2016
- royalfestus August 25, 2016
- nelson4luv November 14, 2016
- mpamaegbu January 09, 2017
- gabbie2010 January 30, 2017
- Gozie51 April 17, 2017
- igebotz June 27, 2017
- CryptopreneurBrainbossJuly 02, 2017
- Tellek Garing September 19, 2017
- Maestro75 September 23, 2017
Wow... So this forum has existed more than a decade
Much respect to our boss for this forum, I no need mention names