Poet Italian flower died around lake (6)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

ARNO (Italian river, or in Crossword-speak “flower” = a thing that flows) + D (abbreviation for died, in genealogical records) around L (abbreviation for lake). There seem to have been a number of poets with the surname Arnold and I can’t say I’m familiar with any of them; I’ll hazard a guess that Tees intends the 19th-century English poet Matthew Arnold, and a quick Google of “poet arnold” appears to back me up.