Complex sentence: The day before the diplomat Sir Edward Stafford visited him and described his spasms and pain "which lasted him unto his death", as well as the Countess who sat "by the fire so full of tears that she could not speak".
Split into simpler sentences: The day before the diplomat Sir Edward Stafford visited him and described his spasms and pain "which lasted him unto his death". He also saw the Countess sitting "by the fire so full of tears that she could not speak".