A British scientist fathered up to 600 children after founding a fertility clinic that promised to provide sperm donors from ‘intelligent stock’, it emerged yesterday.
Biologist Bertold Wiesner supplied sperm to the partners of infertile men from the middle and upper classes, including ‘peers of the realm’.
His wife Mary Barton later destroyed medical records, meaning most of those conceived there – and their thousands of subsequent offspring – have no idea of their true family history and blood ties.

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