All over the internet many sites claim that Ramses II had B negative blood, they do this without any kind of proof and merely copied and pasted from someone else's mistranslation. It has since been copy and pasted on to hundreds of blogs. This article is to put this myth to bed once and for all.
Seeing as Ramses II is a direct line back to my own family it shocked and annoyed me to find people making the claims that Ramses II has B type blood, as this is the blood of Homo-Erectus lines, not our Neanderthal lines, which are O negative. So I did my own research and found the source of this disinformation.
The study on the Mummy of Ramses II was done by some French Scientists in 1985, who produced their results in a paper:
La Momie de Ramsès II: Contribution Scientifique à l'Égyptologie (1985). The results showed that Ramses II of Egypt had red hair and was HLA-B27+. HLA-B27+ causes Ankylosing Spondylitis, Psoriatic Arthritis and many other auto-immune diseases.
However in a general news report about this it was mixed up with the following research - Jean Bernard, who was Director of the Research Institute of leukemia and blood diseases, President of the Academy of Sciences and a member of the French Academy, in his book Blood and History (1983), shows that the blood test used to characterize the populations, suggesting the passage where the mummy of Nakht:
The blood groups, hemoglobins, enzymes, remain the same (except for rare exceptions) from birth to death. Beyond death. An examination of the mummy of Egyptian Nakht weaver, who lived in the time of Ramses II, showed that the blood belonged to the weaver B.
This doesn't translate very well, but he isn't talking about Ramses II having B blood, he is talking about the Weaver, a servant, of his time having B blood.
Untranslated it reads: Les groupes sanguins, les hémoglobines, les enzymes, restent les mêmes (sauf rarissimes exceptions) de la naissance à la mort. Au-delà de la mort. L'examen de la momie du tisserand égyptien Nakht, qui vivait du temps de Ramsès II, a montré que le tisserand appartenait au groupe sanguin B. (The Weaver belonged to the blood group B).
You can find this information here http://www.ankhonline.com/revue/histoire_afrique_acquis_recherche_ankh.htm
You can also find out about the weaver here http://tim-theegyptians.blogspot.com/2011/03/coffin-of-weaver-nakht.html
This is why is always important to check your sources before copy and pasting.