OK, before we answer this question, let’s explain what it means. A primary source, according to Wikipedia, is an artifact, document, diary, manuscript, autobiography, recording, or any other source of information created at a specific time in history that is under study.
Primary sources are documents, images, or artifacts that provide firsthand testimony or direct evidence concerning a historical topic under research investigation.
Because newspapers are considered a primary source and obituaries are published as stories in newspapers, they could be considered a primary source. But you might want to check with your history professor before you take our word for it.