Title: Mary of York
Content:  In May 1480, Mary was named a Lady of the Garter along with her younger sister Cecily of York. Their older sister Elizabeth had already been a Lady of the Garter in February of the same year.
Title: Mary Honywood
Content:  Mary Honywood or Mary Waters (1527 – 1620) was a British co-heiress who visited the Marian martyrs. She lived to have 114 grandchildren and, in total, 367 descendants in her lifetime.
Title: Mary Paik Lee
Content:  Mary married H.M. Lee and had 3 sons. She also continued to provide assistance to her parents and siblings. Though there was a constant battle with prejudice and discrimination, she worked hard to provide.
Title: Fair Mary of Wallington
Content:  Two sisters had once been two of seven, but all their sisters had died in childbirth. The older vows never to marry, but is married off to a knight who lives in Wallington Hall. She becomes pregnant and sends for her mother when she is in childbed. She dies; in most variants, the baby has to be saved by cutting open her side. In many variants, the youngest sister vows never to marry, but her father insists that he will marry her off.
Title: Mary of York
Content:  Mary of York was born on 11 August 1467 at Windsor Castle. She was the second child of Edward IV of England and his queen Elizabeth Woodville. Mary was baptised soon after her birth. One of her sponsors was the Archbishop of Canterbury Thomas Bourchier. She had nine siblings (Elizabeth of York, Cecily of York, Edward V of England, Margaret of York, Richard of Shrewsbury, 1st Duke of York, Anne of York, George Plantagenet, Duke of Bedford, Catherine of York and Bridget of York) and two half brothers from her mother.
Title: Sisters of Mary Reparatrix
Content:  Communities of the congregation began to be established throughout France, the first being in Paris. By the time of her death in Florence, Italy, in 1878, Mother Mary of Jesus had overseen the founding of 20 communities of the Sisters in India, England, Belgium, La Reunion, Italy, Mauritius, Ireland and Spain.
Title: Mary Sherwood
Content:  Mary Sherwood was born on March 31, 1856, in Ballston Spa, New York, and was one of three children to Thomas Burr Sherwood, a lawyer and farmer, and Mary Frances (Beattie) Sherwood. Her sister, Margaret Pollock Sherwood became an English professor at Wellesley College and her brother, Sidney Sherwood, became a professor at Johns Hopkins University. She never married or had children, but formed close bonds with her long time friend, Lilian Welsh. She later died at 79 years of age of a coronary occlusion.
Title: The Other Boleyn Girl
Content:  Boleyn. As such, she is usually mentioned in the numerous biographies that have been written about Anne, but never in any substantial detail. Mary, unlike Anne, has been claimed to be the mistress of two kings – Francis I of France and Henry VIII of England. She was born sometime between 1499 and 1508. A popular but unverifiable legend suggests that Mary was considered the prettier of the two sisters while Anne was witty, intelligent and charismatic. Mary was married twice, first to William Carey, and second to William Stafford. She died in her early forties in 1543. Areas of disputed historical accuracy include the following:
Title: Norah Martin
Content:  At age 20, Martin decided to enter the religious life and in 1908 became a postulant with the Sisters of the Little Company of Mary in Lewisham, Sydney, New South Wales. Founded by the Venerable Mary Potter in Nottingham, England, the Little Company of Mary was a religious order dedicated to nursing the ill and dying. The Australian congregation has been established in 1885. The sisters were known affectionately as the "Blue Sisters" because of their distinctive blue habit. Martin took on the religious name of "Mary Bernard" and professed her final vows on 6 August 1912. Martin trained as a nurse at Lewisham Hospital, 
Title: Mary Prince (nanny)
Content:  She was born "in stark rural poverty" in 1945 in Richland, Georgia, the second of three sisters. She can't remember her father, and her mother and stepfather separated when she was aged about 9. Her older sister Carrie Francis died of a brain abscess when Mary was 12, after which she dropped out of school to look after her younger sister. She briefly married at age 14, and had her first son. A year later she began work as a domestic. She became pregnant with her second son in New York in 1964, before returning to Georgia in 1967, where she eventually became a cashier in a restaurant. When she lived and worked in the White House, her sons stayed in an apartment in the working-class Washington suburb of Suitland, Maryland and were looked after by her sister during the day, while she took a taxi to take care of them in the evening before returning by taxi to the White House late at night to be up early for Amy. She officially separated from her husband in 1979, and changed her name back from Mary Fitzpatrick to Mary Prince. She is a devout Christian.

Question: how many mary mary sisters?
Answer: Erica Campbell.