> People sharing the same "family name" are presumed to be family. If only they had ALTER TABLE people CREATE UNIQUE KEY uq ON people.family_name; back when th

> People sharing the same "family name" are presumed to be family. If only they had ALTER TABLE people CREATE UNIQUE KEY uq ON people.family_name; back when these things were registered. Most Jansens ("son of Jan") in my country are related only to the same degree that you and I likely are