mc5 - King AVMA the III

Gooseberry?

[C] If it's grown in Wisbech, I suppose it is.
Hint: not a native fruit of the swamp.
[RtG] Not a gooseberry.

Is it an anagram?

… of “ruble byre”?

[SM] Anagrams certainly exist.
[CdM] No.

… of “dryer rebel”?

of "monel"?

[CdM] the "dreelberry" does not exist.
[SM] the AOTC has more than 5 letters.

… of “colder ruby”?

Hidden text

[B] Maybe not, but the Bavarian lederberry certainly does