The first woman considered to be Queen-Regnant of England, though her reign is disputed, was Matilda, formerly Empress of Germany. Her mother was Matilda of Scotland.
Almost-Queens: Matilda of Scotland
Alice Perrers: The Manipulative Mistress
Alice Perrers was quite the ambitious mistress, though we have to have some sympathy for her—she has been hated in her time and ever since.
Almost-Queens: Anne Hyde: Mother of Two Queens-Regnant
Anne Hyde nearly became Queen of England but died before her chance to. She was a commoner who, through good luck, became the mother of Queens Mary II and Anne.
Sarah Lyttleton: Governess to Queen Victoria’s Children
Sarah Lyttleton was a beloved mother figure to Queen Victoria's nine children, all of whom kept fond memories of her as they lived their grand futures.
Elizabeth Tailboys: Henry VIII’s Forgotten and Fearless Daughter
Elizabeth Tailboys was a daughter of Henry VIII, but since she was illegitimate, her story isn't told much, though it seems quite fascinating.
Catherine of Aragon’s Bout of Sweating Sickness
Catherine of Aragon is famous for being the unfortunate first wife of King Henry VIII. When he was just a royal nobody, Catherine became ill with sweating sickness.
Rosamund Clifford: The Queen’s Rival
Rosamund Clifford (c. 1150 - c. 1176) was Henry II of England's mistress. Unluckily for her, his wife was Eleanor of Aquitaine, who was not at all fond of The Fair Rosamund.
The Last Letter of Mary, Queen of Scots
Mary, Queen of Scots, is famous for being executed by her cousin, Queen Elizabeth I. Before her beheading, Mary wrote a letter to her brother-in-law, Henri III.
Berengaria of Navarre: The Queen Who Never Set Foot In Her Country
Berengaria of Navarre became Queen of England in the 1100s, but because her husband was always on crusade, she never got to settle down in England.
Nell Gwyn: The Beloved Mistress of Charles II
The hardest task for a royal mistress was getting the public to actually like them. Nell Gwyn made that seem almost too easy. She also has a monument in London.
The Royal Women 