custodianship (noun)

1. In the science fiction novel, the main character is entrusted with the custodianship of a powerful artifact.

2. During the ancient civilization, custodianship was often passed down through generations within the royal family.

3. The protagonist in the literary masterpiece was granted custodianship of a secret manuscript.

4. The famous designer's custodianship of the brand ensured its success and popularity in the fashion industry.