I had never heard of this before stumbling onto the topic while researching Emar, but apparently in the post Imperial period of Carchemish, the new, usurpatory dynasty of Carchemish not only continued the cult of veneration of dead rulers, but Katuwas (fl. 900 BC) founded a Royal Ancestor's cult by the renovated King's Gate and erected a statue of his ancestor (father/grandfather ?) Suhis under the name Atrisuhas, or "Soul of Suhas".
The inscription apparently reads
"For this God Atrisuhas with the Gods (he) who does not [offer] annual bread, an ox and two sheep, against him may Atrisuhas come fatally!"
A detailed version of the inscription and analysis thereof can be found here, just scroll back a page to the beginning