On a recent trip to the Mountbatten Archives I came across a donation from the Rothschild family bloodline to pay for Mountbatten's records to be kept at Southampton University. This is in line with the Rothschild gift(s) the family received during and after his death.
Mountbatten was married to Edwina a fabulously wealthy heiress, and so this begs the question. What did Mountbatten do for the Rothschilds to be lavished funds and gifts like the swimming pool which was built for him at Broadlands, as mentioned above in the Brian Hoey puff piece biography, The Private Story?
I don't know but I'm confident I can find out with sufficient research.