Prior to his death, Murumbi was romantically involved with Nyota Uhura. In the years following his death, Uhura mourned him as if she was a widow and put her life on hold, refusing to find a new love, and even not taking the shore leave that she should when she served in Starfleet. (TOS - Star Trek II Short Stories short story: "Under Twin Moons")
- The date of 2164 was given in "Under Twin Moons". The date has been adjusted to 2264, due to the fact that he personally knew Nyota Uhura, make a mid-22nd century date for his death rather impossible.