According to his grave marker , Hartnell died on Beechey Island , on 4 January 1846 , at the age of 25 .
1980s pathology reports suggest that Hartnell became blind in the right eye at some point before death .
According to Hartnell 's grave marker , Hartnell died on Beechey Island , on 4 January 1846 , at the age of 25 .
1980s pathology reports suggest that Hartnell became blind in the right eye at some point before death .