Wallace was the surname of at least two residents of the Omicron Theta colony in the 2330s.

They were friends of Kila Marr, and she left her son Raymond with them when she departed the colony sometime prior to 2338. Raymond liked the Wallaces, but believed they did not have the sense of humor that his mother had.

They were presumably killed along with most of the other Omicron Theta inhabitants after the Crystalline Entity attacked in 2338. (TNG: "Silicon Avatar")

This family was only mentioned in dialogue.