[Footnote 10: Thus, in a warrant, dated 6th March 1381, an order is given by the Duke for payment to a Goldsmith in London, of 10_l._ 18_s._ for a present made by our dear daughter Philippa, to our very dear daughter Mary, Countess of Derby, on the day of her marriage; and also "40 shillings for as many pence put upon the book on the day of the espousals of our much beloved son, the Earl of Derby." Eight marks are ordered to be paid for "a ruby given by us to our very dear daughter Mary:" 13_s._ 4_d._ for the offering at the mass. Ten marks from us to the King's minstrels being there on the same day; and ten marks to four minstrels of our brother the Earl of Cambridge being there; and fifty marks to the officers of our cousin, the Countess of Hereford! On the 31st of January following, the Duke lays himself under a bond to pay to "Dame Bohun, Countess of Hereford, her mother, the sum of one hundred marks annually, for the charge and cost of his daughter-in-law, Mary, Countess of Derby, until the said Mary shall attain the full age of fourteen years."] We shall probably not be in error, if we fix the period of the Countess of Derby leaving her mother's for her husband's roof somewhere in the year 1386, when he was twenty, and she sixteen years old; and we are not without reason for believing that they made Monmouth Castle their home.