I haven't got a clue about 18ac!
Swift's achievement heard round lake (5)
Perhaps it's my lack of education?
Don't just give me the answer - explain it please.
I know that for years we have only been giving clues, not actual answers. Although I said I hadn't got a clue, I was thinking along those lines you gave. What is the reference to Swift's? A bird, Jonathan or some other Swift?
I'm familiar with the use of a name in an anagram or similar clue, but fell into the trap of thinking of a name because it started with a capital letter and then had 's
Like you I needed to change my answer from "w" to "c"