This will be the fourth marriage for Mr Murdoch and the first marriage for Miss Hall, although she was in a relationship with singer Sir Mick Jagger for many years and had a family with him.  Forbes estimates that in 2015 Rupert Murdoch and his family had a net worth of £7.7 billion and Miss Hall has an estimated net worth of $15 million.  Whilst it can appear to take the romance out of anticipated marriage, it would be prudent for them to have legal advice about a pre-nuptial agreement (or the equivalent document depending on what country they choose to plant their roots)  to protect their respective financial stability for themselves and their families and to reduce potential conflict that may occur in the future.