 The most famous of these stelae is the Rosetta Stone, which allowed the deciphering of ancient Egyptian script in the 19th 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.