Complex sentence: In his lifetime were published the 4th, 5th, 6th and 7th DECADAS; when Couto died, his other works were in the hands of his brother-in-law, the priest Deodato da Trindade.
Split into simpler sentences: In his lifetime the 4th, 5th, 6th and 7th DECADAS were published. After Couto died, his other works were in the hands of his brother-in-law, the priest Deodato da Trindade.