Here are some examples:
Not capitalized:
* The patriarch of the family made the final decision.
* He is a patriarch in the community, respected by all.
Capitalized:
* The Patriarch of the Eastern Orthodox Church is the spiritual leader. (Used as a title)
* The Patriarch of the Jewish faith is a respected leader. (Part of a proper noun)
Important Note:
The capitalization of "patriarch" can be inconsistent, depending on the context and style guide being followed. If you are unsure, it is always best to check a reputable dictionary or style guide.