How long did prince madoc's welsh colony last?

Answer:

Most scholars agree that the 1858 Eisteddfod essay by Thomas Stephens finally disproved the mythical discovery of America by Prince Madoc.
The story had never looked very likely - and was probably a Tudor fabrication to contest Spanish rights in the continental mainland.

First answer by Thallassocracy. Last edit by Thallassocracy. Contributor trust: 92 [recommend contributor recommended]. Question popularity: 1 [recommend question].