Complex sentence: Professor George Menachery, editor of the St. Thomas Christian Encyclopedia of India and the Indian Church History Classics (b.1938 in Kerala) retired as Post Graduate Professor and Head of the Dept. of English from the St. Thomas' College, Trichur, now Thrissur.
Split into simpler sentences: Professor George Menachery (b.1938 in Kerala) is editor of the St. Thomas Christian Encyclopedia of India and the Indian Church History Classics. He retired as Post Graduate Professor and Head of the Department of English from the St. Thomas' College, Trichur, now Thrissur.