Isabelle of Castile
Every King or Queen of England since Henry VIII is descended from Isabelle Perez. Perhaps as significant is that it was her immediate family which challenged for the throne during the Wars of the Roses.
Constance Pedra married another royal prince, John of Gaunt and he then spent a substantial portion of his adult life scheming to invade Castile to claim her inheritance. One of Constance’s descendants was Catherine of Aragon, who in an attempt to reincorporate the two bloodlines, married Henry VIII, as his first wife. the determination of the english royal family to reclaim the blood line can be seen that she was first married to Henry’s older brother Arthur and when he died was married to henry, something that the Church did not normally allow.
What is incredible is that Isabelle and Constance were illegitimate daughters of Pedro of Castile. In Spanish genealogical records they are not know as “Perez” but by the name of their mother “de Padilla”
What caused such interest and a determination to share the bloodline of two illigitimate sisters? As the various contenders for sovereignty searched around for bloodlines which might justify their “right to rule”. A new line was discovered and promoted. It does not matter what we think of such theories today, in 1350 these theories were believed and battles fought over them.
The new line was said to offer a direct Matrilineal link to Mary Magdelene, whose womb was considered to be the Sangreal, via the fruit of her womb, her daughter Tamar.
Descent from Mohammed
Just to be sure this bloodline was said to give a second benefit, direct descent from Mohammmed. At a time when it seemed possible that the whole of Europe might fall under the rule of Islam, this was a significant consideration.
Maria De Prdilla
The sisters mother, Maria Juana de Pedilla, mistress of Pedro of Castille, was the recipient of this Holy Blood. The Alcazar in Seville was built as her home and water cistern within the alcazar is still known as “The baths of Maria Pedilla”
The matrilineal lineage
It turns out that there are two separate descents from Mohammed, the first through Zaida of Denia This link is well known and Zaida’s lineage to Mohammed is well documented because the lineage was claimed by Frederich II Hohenstauffen. What is disputed is wether Zaida is the mother of Sancha Alfonsez of Castile, some records show her mother as “Elizabeth”. The Spanish records are adamant however that Zaida was baptised and took the baptismal name of Elizabeth.
There is a break in the matrilineal decent however as to get back to roman times , which is necessary if we are searching for Mary Magdelene and her daughter tamar the line passes through Arnaud de Razes. It is quite possible of course that Lucy of provence is descended from another branch of the matrilineal descent.
I will refrain from any further speculation here. But deal with it under “Ximene’s Genealogy”. Ximene as we know is a fictional c.haracter The Perez sisters emphatically are not.