I think the answer is after because heyday means a period of success or popularity
It is based on the context that the Hydrophobic Skunk is so rare that nobody ever saw him, this indicates that the regular person from anywhere cannot identify if the skunk really exist since no one has ever seen one. It is like a myth or a legend or just really rare. For the native, who has seen one or perhaps has been living with one around its area, knows the skunk exists, but depends on whether he or she knows its the name as Hydrophobic Skunk since no report was given that the skunk lives in the certain area. He or she may refer to it as just a skunk.
In the poem In Memoriam, A. H. H. by Alfred, Lord Tennyson, the poet expresses a philosophical belief in the eternal life of the spirit.
"In Memoriam A.H.H." or simply "In Memoriam" is a poem by the British poet Alfred, Lord Tennyson, completed in 1849.
Originally the title of the poem was "The Way of the Soul", and this might provide a clue of how the poem is an account of all Tennyson's thoughts and emotions as he grieves over the death of a close friend.
You can predict that they will remain married and will live happily. He may have cheated on her with Cassandra, but what the man did back then didnt matter. Since she remained loyal and steadfast to him, he chose to remain with her.