The Decrees of Memphis were issued in 216 and 196 BC, by Ptolemy IV and Ptolemy V respectively. Delegates from the principal clergies of the kingdom gathered in synod, under the patronage of the High Priest of Ptah and in the presence of the king, to establish the religious policy of the country for years to come, also dictating fees and taxes, creating new foundations, and paying tribute to the Ptolemaic rulers. These decrees were engraved on stelae in three scripts to be read and understood by all: Demotic, hieroglyphic, and Greek. The most famous of these stelae is the Rosetta Stone, which allowed the deciphering of ancient Egyptian script in the nineteenth century. There were other stelae, funerary this time, discovered on the site that have forwarded knowledge of the genealogy of the higher clergy of Memphis, a dynasty of high priests of Ptah. The lineage retained strong ties with the royal family in Alexandria, to the extent that marriages occurred between certain high priests and Ptolemaic princesses, strengthening even further the commitment between the two families.