Menaḥem ibn Saruq

Menaḥem ibn Saruq (also known as Menahem ben Jacob ibn Saruq, מנחם בן סרוק, ca.920-ca.970‎) was a Tortosa born Spanish-Jewish philologist of the tenth century CE. He was a skilled poet and polyglot. Menaḥem produced an early dictionary of the Hebrew language. For a time he was the assistant of the great Jewish statesman Ḥasdai ibn Shaprut, and was involved in both literary and diplomatic matters; his dispute with Dunash ben Labrat, however, led to his downfall.

https://en.wikipedia.org/wiki/Menahem_ben_Saruq