According to Wikipedia's history of banking article:
Modern banking practice, including fractional reserve banking and the issue of banknotes emerged in the 17th century.
The article on fractional reserve banking seems to suggest that the Bank of Amsterdam is the earliest example:
In the past, savers looking to keep their coins and valuables in safekeeping depositories deposited gold and silver at goldsmiths, receiving in exchange a note for their deposit (see Bank of Amsterdam). These notes gained acceptance as a medium of exchange for commercial transactions and thus became an early form of circulating paper money. As the notes were used directly in trade, the goldsmiths observed that people would not usually redeem all their notes at the same time, and they saw the opportunity to invest their coin reserves in interest-bearing loans and bills. This generated income for the goldsmiths but left them with more notes on issue than reserves with which to pay them. A process was started that altered the role of the goldsmiths from passive guardians of bullion, charging fees for safe storage, to interest-paying and interest-earning banks. Thus fractional-reserve banking was born.
But it does not state that, nor does the article on the Bank of Amsterdam.
I imagine the exact details might be murky, but I'm looking for a summary of the recognized possibilities. What organizations are candidates for the earliest fractional reserve banking system, and when did they begin their fractional reserve banking?
I also realize that there may have been organizations which did so a long time before it became an established practice. If that's the case, please mention those organizations, but please also summarize who the early pioneers of our present system of fractional reserve banking are.