4 adjectives to describe depositaries

Sarah, sole depositary of the secret, had to remain in charge of No. 59.

To the people, therefore, and to the faithful and able depositaries of their trust is the credit due.

An elective Governor and two legislative houses were provided; and the representation was proportioned, not to the population at large, but to the citizen who paid taxes; for persons with some little property were still considered to be the rightful depositaries of political power.

And I'm the unhappy depositary of all their complaints and secrets.

4 adjectives to describe  depositaries