Ibn Bishr 's chronicle , which stops at the year 1854 , was written a generation later than Ibn Ghannam 's , but is considered valuable partly .
Ibn Bishr was a Ibn Bishr of Najd and because he adds many details to Ibn Ghannam 's account .
Ibn Bishr 's chronicle , which stops at the year 1854 , was written a generation later than Ibn Ghannam 's , but is considered valuable partly because Ibn Bishr was a native of Najd and because he adds many details to Ibn Ghannam 's account .