Tristan O'Tierney, Square Co-Founder, Dies at Age 35

An anonymous reader quotes the San Francisco Chronicle:
Tristan O'Tierney, a co-founder of San Francisco payments company Square, died Feb. 23 in Ocala, Fla., of causes related to addiction, his family said. He was 35...
His family is awaiting an official cause of death from officials. 'I do know that it was in relation to his addiction,' [his mother] Pamela Tierney said. 'I know he got to the hospital, he couldn't breathe and they couldn't revive him.' O'Tierney was in a three-month rehabilitation program in Ocala and had been battling addiction for three years, Tierney said. O'Tierney openly discussed his struggles with addiction on social media. 'As some of you may know, I've been battling with addiction for these past few years,' he wrote in September in a now-deleted Instagram post that he also shared on Twitter. 'With some success. A lot of failure too though.'

Bloomberg remembers him as a former engineer at Yahoo and Apple who was hired to develop Square's original mobile payment app in 2009, then stayed on until 2013.
'In addition to his parents, O'Tierney is survived by his three-old-year daughter, according to an obituary on the website for the funeral home.'

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