Cestui Que Vie Act 1666

An Act for Redresse of Inconveniencies by want of Proofe of the Deceases of Persons beyond the Seas or absenting themselves, upon whose Lives Estates doe depend.

Cestui que vie remaining beyond Sea for Seven Years together and no Proof of their Lives, Judge in Action to direct a Verdict as though Cestui que vie were dead.

If the supposed dead Man prove to be alive, then the Title is revested. Action for mean Profits with Interest.
http://www.legislation.gov.uk/aep/Cha2/18-19/11

In every case the Judge must determine that he has Consent, Personam and Subject Matter Jurisdiction before he can act or access the Cestui Que Trust
https://anticorruptionsociety.com/judge-dale-part-5/