He wrote about a place in which "Fat caterpillars drift around /
He wrote about a place in which "Fat caterpillars drift around / And Paradisal grubs are found" in a poem which imagines what Heaven must seem like to fish.  "And Henry, a stockbroker, doing well" is the last line of a poem he wrote about a married couple, "Sonnet Reversed," though he is better known for a sequence of more conventional sonnets, the first of which concludes that "the worst friend and enemy is but Death."  Those five sonnets appeared in New Numbers in 1915 and include one that claims that a corner of a foreign field is forever England.  FTP, name this British poet who died before 1914 and Other Poems, which includes "The Soldier," could be published.
He wrote about a place in which "Fat caterpillars drift around /
Rupert Brooke