Final answer:
No specific jury member is universally known for believing Sam Sheppard murdered his wife today; beliefs may vary based on personal convictions and influences from the trial and media.
Step-by-step explanation:
The question is in relation to a historical criminal case, namely that of Sam Sheppard, who was accused and later acquitted of murdering his wife, Marilyn Sheppard. There isn't any specific jury member that is universally recognized for still believing in Sheppard's guilt to this day, but typically in controversial cases, some jurors might maintain their original beliefs regardless of acquittals or exonerations. This inclination can be influenced by various factors such as personal convictions, the weight of presented evidence during the trial, or the impact of media coverage and public opinion.