Jason, I know that I've included a number of LGBT characters in my Star Trek
fiction, though it may take me some effort to recollect them all. Off the top of my head, I can think of a few.
In my Lost Era
novel, Serpents Among the Ruins
, the female Romulan ambassador, Gell Kamemor, had a female partner named Ravent. The couple had a son. Kamemor and her family were characters I created.
In my Crucible: Kirk
novel, The Star to Every Wandering
, I included as a character the woman who had appeared as the captain of the U.S.S. Saratoga
in Star Trek IV: The Voyage Home
. In the novelization of the film, she had been given the surname Alexander. I added her given name and nickname, Margaret ("Madge"), and her married name, Sinclair-Alexander, in tribute to the actress who originated the role. Margaret Alexander married Cynthia Sinclair, and the two hyphenated their last names.
I also included a relationship between Krissten Richter and Etana Kol in my Mission: Gamma
. I think I introduced the relationship, and perhaps one of the two characters, though if I recall correctly, that relationship had been crafted for a subsequent novel; it just made dramatic sense for the romance to be shown at an earlier time in the story arc.
That's all I can think of at the moment, though I know there are others. (How come I can only recall lesbian characters right now?!?) Unfortunately, I don't know when I'll have time to search through my novels to find the others for you. Perhaps some of the readers of my work can help you in a more expeditious manner than I can.
Best of luck with the research and that section of your website.