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Case file s431 · Divorce and feuds · 2010
2010
Died
living; judgment October 20, 2010
Place
London · United Kingdom
Field
German industrial fortune · Business and finance on the timeline
Legal tradition
English family law · Common law
Historical event
UK Supreme Court gives prenuptial agreements decisive weight
AI illustration: A signed prenuptial agreement on a table in the UK Supreme Court, 2010
Illustration made with AI for celebrity.estate.

A German paper heiress's prenup held in London, and her French ex-husband's £5.85 million award was cut to £1 million

Katrin Radmacher, heir to a German paper-industry fortune reported at about £100 million, married Nicolas Granatino, a French banker, in London in 1998. Before the wedding they signed a German marriage contract barring him from financial claims on her if they divorced. There was no disclosure of her wealth, and he refused independent legal advice. He later left banking for academic research at Oxford†. On divorce the High Court awarded him £5.85 million. The Court of Appeal reduced it to about £1 million, plus housing provision for the time the children lived with him. On 20 October 2010 the UK Supreme Court dismissed his appeal by 8 to 1. It held that a court should give effect to a prenuptial agreement freely entered into with full understanding of its implications, unless it would be unfair to hold the parties to it. Before this ruling English courts generally gave prenups little weight.

What the law took from it

In England a prenup signed freely and with understanding will usually be enforced.

Cite as: celebrity.estate, “A German paper heiress's prenup held in London, and her French ex-husband's £5.85 million award was cut to £1 million,” story s431, https://www.celebrity.estate/a-german-paper-heiresss-prenup-held-2010, updated 30 October 2026.

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