The repetition in the poem Porphyrias Lover is "that moment she was mine, mine".
There's no official date for when it was written, however, it first appeared in 1836.
Hepatic porphyrias.
The underlying cause of all porphyrias is a defective enzyme important to the heme biosynthesis pathway. Porphyrias are inheritable conditions.
The erythropoietic porphyrias and porphyria cutanea tarda are considered to be chronic conditions.
The porphyrias are disorders in which the body produces too much porphyrin and insufficient heme (an iron-containing nonprotein portion of the hemoglobin molecule).
Erythropoietic porphyrias (erythropoiesis is the process through which red blood cells are produced).
All of the hepatic porphyrias--except porphyria cutanea tarda--follow a pattern of acute attacks separated by periods during which no symptoms are present.
Considered a rare disorder.
I would have thought your teacher would have discussed this with you. GCSE English, eh? Anyway, I think it may be interpretive but the man is Porphyria's lover, hence the title. She has a husband, and when she comes to visit one stormy night, he kills her so as to keep her as his own and not let anyone else have her. At least, that's how I remember it.
Non-acute porphyrias present as chronic diseases.
Perhaps, meaning 'wolf-lover, lover of hounds'. (Gaelic Personal Names, 1981)