R.I.P. Star Trek's Arlene Martel, 1936-2014
Arlene Martel, who played Spock’s Vulcan bride T’Pring in the Star Trek Original Series [...]

Arlene Martel, who played Spock's Vulcan bride T'Pring in the Star Trek Original Series episode "Amok Time," passed away on Tuesday, August 12, 2014, Trek News reports. She was 78.
Martel was remembered on social media by a number of former co-stars and collaborators, including Leonard Nimoy.
Saying goodbye to T'Pring, Arlene Martel. A lovely talent.
— Leonard Nimoy (@TheRealNimoy) August 13, 2014
Martel's friend Marc Cushman, author of the book These Are The Voyages, confirmed the news via the book's official Facebook page. She apparently died following complications from a recent heart attack.
At the end of June, she and Cushman appeared in Santa Monica, California, to promote the book. It would be her final public appearance.
The site notes that Martel is also known for appearances on Bewitched, The Wild, Wild West, the original Battlestar Galactica. She also appeared on The Outer Limits.