The late Jill Ireland played Leila Kalomi, a female Human botanist in the 23rd century. While on Earth in 2261, Kalomi met Spock, a Vulcan Starfleet officer. Kalomi immediately loved Spock and declared her feelings for him, but Spock could not return those emotions for her. Even after they parted company, Kalomi still carried feelings for Spock.
In 2263, Kalomi joined Elias Sandoval’s colonial expedition to Omicron Ceti III, and served as the groups senior biologist. When the expedition finally landing on Omicron Ceti III a year later, Kalomi discovered the pod plants and the contagious spores which they released into the atmosphere. While these spores protected the colonists from the deadly Berthold rays present in the atmosphere, they also gave the colonists a sense of contentment and perfect physical health.
Three years later, in the episode This Side Of Paradise, the USS Enterprise arrived in orbit of Omicron Ceti III to try and establish the loss of contact with the colony. Spock and Kalomi were quickly reunited, and she used one of the pod plants to infect Spock and break down his emotional controls so that he could love her in return. The couple spent many blissful hours together on the planet’s surface, but the spores control over Spock was broken when Captain James T. Kirk was able to induce great anger in his first officer. Realising that she had lost Spock once again, Kalomi broke down in tears. She later evacuated with the rest of the colonists to Starbase 27. Spock wrote a poem, which elaborates on his feelings for Kalomi. It seems possible that he did return her affections, secretly.
The very sweet looking & beautiful Jill was married to David McCallum from May 11, 1957 to 1967, with whom she had three sons, including their adoptive son Jason McCallum Bronson, who died of a drug overdose in 1989. From October 5, 1968 until her death, she was married to actor Charles Bronson, in whose films she frequently appeared. Late in her life, Ireland wrote two autobiographical books, Life Wish (1987, about her experiences after being diagnosed with breast cancer) and Life Lines (1989, about her adoptive son’s drug addiction). Ireland died of breast cancer at the age of 54 in California.