Complex sentence: His grandfather Sayyid Ismail al-Yaqoubi was a leading scholar and Sufi Master, his father's maternal uncle was Shaykh Arabi al-Yaqoubi and his paternal uncle was the famous Gnostic, Shaykh Sharif al-Yaqoubi.
Split into simpler sentences: His grandfather Sayyid Ismail al-Yaqoubi was a leading scholar and Sufi Master. His father's maternal uncle was Shaykh Arabi al-Yaqoubi and his paternal uncle was the famous Gnostic Shaykh Sharif al-Yaqoubi.