He was buried in a cemetery in Baghdad but as far as I know, the exact location of his grave is unknown.
Ahmad ibn Hanbal was born in 780.
Ahmad ibn Hanbal died in 855.
Christopher Melchert has written: 'Ahmad ibn Hanbal (Makers of the Muslim World)'
Ahmad ibn Muzahim ibn Khaqan died in 868.
Khumarawaih ibn Ahmad ibn Tulun died in 896.
Ahmad ibn Tulun was born in 835.
Ahmad ibn Tulun died in 884.
Ahmad ibn Tawoos died in 673.
Ahmad ibn Ajiba was born in 1747.
Ahmad ibn Ajiba died in 1809.
Ahmad ibn Arabshah was born in 1389.
Ahmad I ibn Mustafa died in 1855.