Which notable individual passed away in 1915?

Ellen G. White is the notable individual who passed away in 1915. She was a foundational figure in the Seventh-day Adventist Church and a prolific author, who significantly influenced the church's development through her writings and leadership. Her contributions include numerous books and articles on theology, health, and education, which are still highly regarded within the church today. White's death marked a key moment in the history of the denomination, as she was considered a prophetess and her writings continue to guide the beliefs and practices of Seventh-day Adventists globally.

The other individuals listed may have had notable roles within their respective contexts or organizations, but Ellen G. White's passing in 1915 is particularly significant due to her lasting impact on the faith and practices of the Seventh-day Adventist Church.