Complex sentence: From 1833 to 1836 Marrat was mathematical tutor in a school at Exeter, but on the death of his wife he returned to Liverpool.He died suddenly there on 26 March 1852, and was buried at the necropolis near that city.
Split into simpler sentences: From 1833 to 1836 he was mathematical tutor in a school at Exeter, but on the death of his wife he returned to Liverpool. Marrat died suddenly at Liverpool on 26 March 1852, and was buried at the necropolis near that city.