Alfred the Great lived between 849 and 899. Alfred was 50 years old when he died. Alfred was King of Wessex between 871 and 899 being succeded by his son Edward the Elder. Alfred was also known by the title King of the Anglo-Saxons or King of the English.
This Saxon Helmet is a Spangenhelm design popular during the Dark Ages and Early Middle Ages.
Typically a Spangenhelm was made up of plates that form a conical shape held together by metal strips. This example is different in that the helmet dome is made up of a single shell and it has a full face mask.