Romana ratherbefred: who actually had delusions IG (if you want, I could link you, if not, that's cool) and probably suffers from PTSD. Her on the Island crazy happened from severe dehydration, and was, one of the worse things that has happened to this formerly immortal girl. She talked about snow and burning and a child doesn't exist and was calm about it. She's probably a bit off additionally as through her life she's been called a god, ruled her people (then had them be killed in front of her), and abandoned in a foreign universe.
Isolde thefairone: (who she thread with Delirium anyways as she lived with Death) went a bit mad when she was 12 years old and her mother died and she nearly drowned. She had a bit of a breakdown, lived in the wild for about two years before being recaptured and married off to the infamous Mark, who later locked her in a tower for a week and probably caused another tiny breakdown. She's better now, but every so often she says the weirdest things, all of which trace back to what's happened to her.
no subject
There are only two that Delirium would know.
Romana
Isolde