Marthad'ilan Yu'nim also known as Marthad al-Khayr, was a Himyarite king who primarily reigned in the late 5th century CE. He is known for his involvement in the Basus War.
Name
As attested in inscriptions, his name is Marthad'ilan Yu'nim; his full name being Marthad ibnLakhni'ah Yanuf al-Himyari. In the books of Arab heritage, his name is Marthad al-Khayr ibn Dhi Jadan. The word Yun'im is Himyaritic for "blessed" which is al-Khayr in Arabic.
Reign
Marthad'ilan Yu'nim started his reign in the year 480. According to the inscriptionYM 1200, he constructed a synagogue and repaired an unknown monotheisticplace of worship known as a Kenesit. Christian J. Robin believed his reign ended in the year 485 CE however there is an inscription dated to 502 CE which does mention his name along with his siblings; the inscription also does not mention him with royal titles. According to the Arabian traditions, Marthad'ilan Yu'nim was succeeded by a king named Qarmal.