Original: Isabella Mary Beeton ( née Mayson ) ( 12 March 1836 -- 6 February 1865 ) , universally known as Mrs Beeton , was the English author of Mrs Beeton 's Book of Household Management , and is one of the most famous cookery writers .
Simplified: The day after the birth of her fourth child , in January 1865 , Isabella became sick with puerperal fever .