In my study of Scripture, there are several things that are important to know about Scripture. First, the canon of Scripture is closed as far as the RCC is concerned. The church will neither delete or add anything to it. That has been extant for a long time now. Secondly, Scripture is an important factor of what is called soteriology, or the study of salvation history. As I said, when and where and under what circumstances Joseph died, What was the fate of the apostles individually, what was Mary’s life after the Resurrection, and all other such questions are irrelevant to the divinely inspired canon of Scripture. As a human and a person deeply interested in all facets of the apostolic and early church times, I would love to know, but it would add nothing to the main thrust of Scripture and nothing to what I must take from the Sacred Writings.
Now, the answers to these questions, and other such inquiries are proper to investigation when it comes to traditional teachings and inquiry. Study of early Church writings, the comings and goings of the early Church fathers, archaeology and the finds of historians, are all proper endeavors. We can learn (and continue to learn) much about early church events through these means. But no, nothing needs to be added to Scripture as it is complete in its divinely inspired purpose.