Fundamentals of mathematics Book

Elizabeth is living in the country under the constant observation of Queen Mary's loyal retainers, the Popes. Elizabeth has her own few personnel who are loyal but she must be very careful to keep far from any more plots so she is not returned to the Tower.
In this setting she learns that her Aunt Mary Boleyn has not died many years before but has been in quiet seclusion and is now on her death bed. Elizabeth escapes to meet the last of her mother's kin. Once there Elizabeth is told of the poison arrows meant for Mary's son Henry Carey and they find that even Mary's illness is the result of poison.
I like the way Edward Thompson whose acting alias is Ned Topside, introduces us to the culture of the middle class itinerant entertainers.