preserve (someone's) legacy

Translations
сохранить наследие (кого-то)
The family worked hard to preserve their grandfather's legacy.
Семья усердно трудилась, чтобы сохранить наследие своего дедушки.
Definitions
To maintain, protect, and honor the achievements, values, or reputation of a person after they are gone, ensuring that their contributions and memory continue to be recognized and respected.