Valentina has sent along this note for context on the upcoming series of Posts about Simon’s English Relatives
I’m forwarding some material about Simon’s English cousins, nephews and nieces, the offspring of his father’s aunt Bertrade de Montfort who married de Chester de Meschines. After seeing who they were and to whom they were married, I imagine that Simon had the opportunity to became the mentor of all those young lords that joined him, at one or another moment in 1258-1265. He knew them since their early childhood, as they were born in the families of his or Eleanor’s relatives.
I note here only those who were connected in some way with the 1258-1265 events, directly or through their nearest relatives. The parts in Italics are most important to Simon’s political activities.
Some married Simon’s French nephews. Some were related more to de Marshall’s, as the Clare’s. Some were married or were to be married to de Mortimer’s offspring. Every time I mention the French offspring of former queen Isabella, I have in mind that they were as much Eleanor’s brothers as king Henry’s. Even Savoyard relatives of queen Eleanor will marry to Simon’s French relatives ( Jeanne de Montfort, daughter of Philippe de Castres, married after 1268, Louis I de Vaud, son of Eleanor’s uncle Thomas of Savoy ( Thomas was the one who married Jeanne de Haianut in 1238, after queen Blanche refused to let her marry Simon).
The nicest thing I found is about Simon’s cousin Margaret de Quincy and Robert Grosseteste:
Margaret de Quincy (~ 1208 - ~ 1258), Countess of Lincoln, As the widowed Countess of Lincoln suo jure, Margaret was brought into contact with some of the most important people in the county of Lincolnshire. Among these included Robert Grosseteste, Bishop of Lincoln, the most significant intellectual in England at the time who recognised Margaret’s position as Countess of Lincoln to be legitimate and important, and he viewed Margaret as both patron and peer. He dedicated Les Reules Seynt Robert, his treatise on estate and household management, to her.
My work on Italian descendants is harder than on the others, as some of them had up to 10 children, born by wives or their lovers and than legitimated. So , I needed to select them and to use more genealogy sites.