Al-Ya'qubi — Arabic Wikipedia

Arabic Wikipedia article on al-Ya'qubi; it names him Ahmad ibn Ishaq ibn Ja'far ibn Wahb ibn Wadih, states he was born in Baghdad and died in Egypt in 284 AH (897) with a variant report of 298 AH, and its section on his madhhab records the split plainly: some affirm he was a Shi'i, others that he was a Sunni.