To begin, go to the Seventh-day Adventist Obituary Index (https://libguides.andrews.edu/SDAPI/) and perform a search for your person of interest. If an obituary appears, go to the Online Adventist Archives site to access the periodical (https://documents.adventistarchives.org/Periodicals). The obituary should provide the names of surviving family members. A general search can also be done for the name on the Archives site. If the individual you are looking for was in denominational employ, searching the historic Adventist Yearbooks the name should yield hits for the respective years.
Seventh-day Adventists believe in inspiring those around us to experience a life of wholeness and hope for an eternal future with God.