Griffithes Wheeler Thatcher, 1911 Encyclopædia Britannica, Volume 28… (1911)
“ YA'QŪBĪ [Ahmad ibn abl Ya'qub ibn Ja'far ibn Wahb ibn Waḍiḥ] (9th century) , Arab historian and geographer, was a great-grandson of Waḍiḥ, the freedman of the caliph Manṣur. Until 873 he lived in Armenia and Khorasan; then he travelled in India, Egypt and the Maghrib, where he died in 891. ”
