Saint Peter's Bones

[Minimalist]

Wouldn't this be another example of the New Testament authors having accurate knowledge of first-century Jewish culture?

Again, why do you assume that there was any significant difference between 1st century and 2d century practices?  For that matter, 1st and 6th century practices.

Life must be so simple when all you have to do is make up shit, Randy.

http://www.bibleinterp.com/articles/burial357907.shtml

Private burials were common among Judean Jews during the Second Temple Era (STE). 1 A pre-condition for a private burial was land ownership. Thus, only the well-to-do could afford for private burials, while the others were buried in public cemeteries, in regular trench graves. Land ownership was just one facet of the financial problem: carving a proper space into a rock or building a Mausoleum, were expensive.

Your boy was supposed to be poor but, oh.  He had a sugar daddy conveniently in place. 

So far, it seems that we have discussed the rich burials exclusively. One might ask: what about the spiritual rights of the poor, the dwellers of the trench graves? What about their afterlife and the earthly burial practices connected thereto? The RL gives no answer, but we can suggest a simple one: the poor did not lose anything. Jewish burial custom assumed naturally that while the bodies in trench graves were decaying, their former owners, the poor souls, underwent the same process the rich souls did: trial and purification in heavenly court. The relatives would visit the trench grave of the deceased a year after the burial and celebrate his eternal freedom. The technical gap compared to the rich burials meant nothing regarding the spiritual rights.

All these were applied to every Jew in the STE, and actually ever since. Jews are buried, until today, according to burial practices and concepts created in the STE.