"Belonging to Gemaryahu [son of] Shaphan "

Gemaryahu son of Shaphan is referred in...

Jer. 36:10
Then Baruch read from the book the words of Jeremiah in the house of the LORD in the chamber of Gemariah the son of Shaphan the scribe, in the upper court, at the entry of the New Gate of the LORD'S house, to all the people.

Compare, 2 Kgs 22:3 where Shaphan, the father, is referred to as the scribe: Now in the eighteenth year of King Josiah, the king sent Shaphan, the son of Azaliah the son of Meshullam the scribe, to the house of the LORD saying,...

Avigad, Nahman. Corpus of West Semitic Stamp Seals. (Jerusalem: Israel Academy of Sciences and Humanities, 1997), 191. Seal # 470