De excusationibus tutelarum liber singularis
Paulus, On the Excuses of Guardianship. When a patron or a stranger appoints a guardian for a minor whom he has named as his heir, and the ward has no other property; it is well to hold that his wishes should be carried out, as he was acquainted with the person whom he wished to be the guardian, and he was so much attached to the minor that he made him his heir.
Paulus, On the Excuses of Guardians. This rule not only prevents them from undertaking the duties of a guardianship, but also should cause their discharge where those duties have already been assumed.
Paulus, On Excuses. It is apparent from a Rescript of the Divine Marcus and Antoninus, addressed to the Prefect of Subsistence, that the measurers of grain have a right to be excused from guardianship.