Related Clues:

• Some may be noble
• 65 across, in 1773
• Barbecues' residues
• Grate residue
• Stuff from the bottom of my hearth
• Remains by the fire
• It's grate stuff
• McCourt's 'Angela's --'
• "... __, dust to dust"
• Barbecue remnants
• Pompeii's undoing
• Symbol of penance
• "... ___, dust to dust"
• The first two periodic table entries
• Briquettes, after the barbecue