His mother was released in 1540 and maintained a friendship with Mary Tudor for the rest of her life; but as a great-grandson of Edward IV and likely heir of the House of York, Edward was considered too much of a threat to be released.
His mother was released from prison in 1540 and for the rest of her life maintained a friendship with Mary Tudor, eldest daughter of Henry VIII and future queen. However as a great-grandson of King Edward IV and a possible heir of the House of York, Edward was considered too much of a threat to the rule of the House of Tudor to be released.