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In page David Smith (botanist):

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Smith was the youngest of two sons, brother to Frank. His parents were William Smith, a mining engineer, and Elva who was a teacher.[1] Smith's brother Frank was killed in Canada. In the 1920s, Smith's parents went to work in Sinai desert.[1] His father initially worked as a mining engineer, before securing a position as the director of a Manganese mine.[2] The family remained in the Sinai desert until the end of World War II, except for occasional periods of leave. In one such period, Smith was born, and lived in the Sinai desert until he was five, when he returned to the UK to live with his grandparents and an aunt.[2]