Abraham b. Yom Ṭov ha-Kohen

אברהם בן יום טוב הכהן

1278-1290

According to Richler and Beit-Arié Catalogue, there is an article on this scribe: "On the scribe, who copied other MSS in Rome, cf. M. Beit-Arié, in Israel Oriental Studies, ii (1972), 51-56." (p. 172)
The scribe is known to have been active in Ferrara in 1278 and in Rome between 1283 and 1290, where he copied three manuscripts for his patron, Shabbetai b. Matatiya, a banker.
Six manuscripts copied by the scribe have been identified (three of them were originally produced as a single volume), and one further manuscript is attributed to him.