The checker seems to have issues with spaces in nicknames and trainer names.
https://www.pokecheck.org/?pk=9371162
https://www.pokecheck.org/?pk=9372538
I don't recall exactly but I think these were caught on German Gen 3, traded to Japanese Gen 3, Pal Park'd from that to Japanese Gen 4, later traded to English Gen 4 and transferred from that to English Gen 5.