A well-struck indirect free kick in the 79th minute by Ogbuke, who came on as a substitute for Chiamaka Madu five minutes earlier, secured all three points for the Flying Antelopes in the midweek league tie.
The bereaved striker was making his debut appearance in the NPFL for the seven-time Nigeria league champions.
“It was a very interesting match and I am very happy to have scored the only goal that got us the victory,” Ogbuke told the media after the match.
“This was my very first match since I lost my dear sister to the cold hands of death and I dedicate the goal and victory to her.
“It will surely get better for us as we battle for the points that will take us to the playoff and ultimately the trophy.”
With the win over Kwara United, Rangers have extended their lead at the top of the log in the NPFL Group A to six points.
Enyimba and MFM are placed second and third with 28 points respectively.