The Duchy of Lancaster (First Creation) became extinct upon her father's death in 1361, however Maud became co-heiress, with her sister Blanche of Lancaster, to her father's estates and remaining titles. The title Earl of Leicester passed to her second husband who was confined due to insanity from 1358 until death in 1389, whilst the Earldom of Lancaster passed to her younger sister's husband, John of Gaunt.
Following her father's passing in 1361, Maud inherited her share of the Duchy of Lancaster along with her sister Blanche. Her husband, who was confined due to insanity from 1358 until his death in 1389, received the title Earl of Leicester. The Earldom of Lancaster passed to her younger sister's husband, John of Gaunt.