Oleph was a male Linnik married to Una in the 24th century.
Oleph and Una were First Federation cultural anthropologists who studied details of indigenous cultures on various planets in the Alpha and Beta Quadrants of the galaxy.
In the year 2366, Oleph and Una created a virtual reality movie which was watched by Deanna Troi. It triggered an autonomic temporary amnesia, but along with personal doubts combined to produce waking trances in which she communicated with Other-worlders, otherwise mythological characters from various cultures on Earth.
Oleph and Una also read some of Worf’s poetry and proposed that he write a novel. Worf started writing it and reaching out to Klingon publishers. (TNG novel: Gulliver's Fugitives}