Stranger in blood explained

In the law of United States and the Commonwealth, a stranger in blood is someone mentioned in a will (such as a beneficiary) who is not related by blood to the testator.^[1] It is therefore the opposite of next of kin.

Notable instances

Suspected serial killer John Bodkin Adams was identified as a 'stranger in blood' in the wills of 132 of his patients.^[1]

Heraldry

In heraldry, being a stranger in blood - through adoption for example - is indicated via a 'canton voided'.^[2]

References

1. Cullen, Pamela V., "A Stranger in Blood: The Case Files on Dr John Bodkin Adams", London, Elliott & Thompson, 2006,
2. Web site: Armorial bearings of Michael Dun.