Sophia of Hanover, Princess Palatine and Electress of Brunswick-Luneburg (1630-1714) (1641 by Gerritt Honthorst), was Elisabeth-Charlotte's aunt. She gave her niece and nephew a home from 1657-1662, allowing the children to escape their father's unhappy court in the early years of his morganatic second marriage. Elisabeth-Charlotte described this time as the happiest of her life.
Electress Sophia of Hanover. Wife of Ernest Augustus, heiress to the English throne through her mother Elizabeth of Bohemia. Mother of King George 1 of England and mother in law of Sophia Dorothea. http://georgianromancewriter.blogspot.co.uk/
Sophia of the Palatinate (commonly referred to as Sophia of Hanover; 14 October 1630 – 8 June 1714) was the Electress of Hanover from 1692 to 1698. Sophia, a granddaughter of James VI and I, died less than two months before she would have become queen; her claim to the thrones passed on to her eldest son, George Louis, Elector of Hanover, who ascended them as George I on 1 August 1714
Sophia Charlotte of Hanover (30 October 1668 – 1 February 1705) was the first Queen consort in Prussia as wife of King Frederick I. She was the only daughter of Elector Ernest Augustus of Brunswick-Lüneburg and his wife Sophia of the Palatinate. Her eldest brother George Louis succeeded to the British throne in 1714 as King George I.