Related Clues:

• 9 down in short, although that makes it largely fishy
• Henry I could have started it, although that's more than a little fishy
• Henry the First may have started it, although that's flat to a large extent
• Henry the First got 27 across back, and that's flat
• The only sort of citrus that's flat
• Perhaps Henry the First, although more than a little fishy
• Henry the First, although that's flat
• This may do for Henry I, but it's a large flat
• Henry the First, in short, although that's fishy to a large extent
• Seems to be Henry I, although that's very fishy
• This might be for Henry the First, although it's such a large flat
• Henry the First, perhaps, although that's flat
• Seems like Henry I, although it's more than a little bit fishy
• Henry the First, although that's very fishy
• Henry I, although a bit fishy, and that's flat