For many years there was only one photograph of low-profile tech tycoon Pat McDonagh (64). Now there are two. The former school teacher and encyclopaedia salesman was one of the first pioneers of e-learning, and made hundreds of millions out of computer-based learning, first through CBT Systems and Skillsoft in the 1990s and later with Riverdeep. At one stage during the dotcom boom, his 53pc stake in Riverdeep was worth €800m. He sold more than €260m worth of shares.
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