"People thinking it already" is wacky ice.
Recently we had the lady who claimed to be the daughter Salvador Dalí, with such an absolutely convincing story that the Court of Justice ordered the exhumation for a DNA investigation.
Result:
no DNA-match between the artist and the alleged daughter.
https://www.theguardian.com/world/2...xhumation-not-his-daughter-dna-paternity-test
Remember a Belgian lady and a Spanish gentleman claiming they were a child of the King of Spain.
In the first case the Supreme Court dismissed the claim for giving an incoherent story, as was out pointed out that the former king does not have blue eyes, would not have been 31 years old in 1965, nor would he have been "The Prince of Spain" etc.
(In the other case there was an equal lack of a coherent story, lack of a matching timeline and lack of details.)