Above-mentioned and Long ago

Above-mentioned adjective - Mentioned or named earlier in the same text.

Long ago and above-mentioned are semantically related. In some cases you can use "Long ago" instead an adjective phrase "Above-mentioned".

Long ago adverb - Of the distant or comparatively distant past.

Above-mentioned and long ago are semantically related. Sometimes you can use "Above-mentioned" instead an adjective phrase "Long ago".