It is now time for a little housekeeping and explanation. The political situation between 1455 and 1459 is too boring and complicated to go into here. Suffice it to say that sometimes the Duke of York was in power, and sometimes the Duke of Somerset and Queen Margaret were. Of course, this Somerset was not the one Richard had killed, but his son, who most confusingly had the same title. Similarly King Henry VI was sometimes insane, and sometimes what passed for 'normal' in the case of Henry VI. In other words, he wasn't actually catatonic, and gave the impression that he was merely unworldly, and in fact quite holy. Had he been a friar, he'd quite possibly been made a saint while he still lived, but as a king he was more in the way of an inconvenience, often signing things he was not supposed to sign, and quite frequently granting the same thing to two different people.
Richard had a number of brothers and sisters alive at this time. The eldest was Anne, who was no longer at home being married to the Duke of Exeter. The idea of these arranged marriages was to build alliances with other noble houses, but unfortunately Exeter hated both Anne and her father, the Duke of York. (This is no reflection on Anne or York. as Exeter hated everyone except Lord Egremont, and was always going around annoying people and getting thrown into the Tower.)
The next eldest were Edward and Edmund. Everyone knows Edward, who was later to become King Edward IV. He was very tall and good looking, and all the ladies liked him, so he always got extra chips on his plate when he lined up for dinner. Eventually, as a direct result, he became rather fat. No one knows much about Edmund, though he was probably similar to Edward, but nicer. These two lived in their own establishment, which may have been at Ludlow, where they were mercilessly bullied by a boy named Croft. Or, as they called him, Bonzo. Later this same Croft became a faithful servant, which probably proves something about bullies.
Next was Elizabeth, who was married to the Duke of Suffolk. If you'd met Suffolk in the street, you'd have thought him a moderately prosperous turnip farmer with no more wits than he needed for the job. But he was in fact a duke, and Elizabeth must have loved him as they had lots of babies together.
Then there was Margaret, of whom little needs to be said except that she was exceptionally tall. Had the House of York put out a ladies' football team, Margaret would have played centre half. Then there was George, who shouted a lot and tried to be a bully. Then Richard himself. These three were in the nominal care of their mother. However the Duchess Cecily was very devout. She spent most of her time kneeling in the chapel, praying for the souls of her deceased children and also praying that she would have no more, just in case it turned out to be a three year pregnancy.
They were not always at Fotheringhay. Sometimes they would move to Ludlow, or to Berkhampstead, or to Baynard's Castle in London, which must not be confused with Barnard Castle, a place they did not own. Occasionally they even went to Sandal, which is in Yorkshire, although not very deep into the county. Although the Duke of York had 'York' in his title, he actually owned very little of Yorkshire. Indeed, much of the county belonged to Henry VI (in his role as Duke of Lancaster) or to various other nasty Lancastrian persons, like Lord Clifford for example. This had been set up just to confuse foreigners.