You have to be careful with lists of famous Unitarians, because sometimes they claim people who stopped being Unitarian part-way through their lives (like Samuel Taylor Coleridge and Thomas Stearns Eliot).

The Poetry Chaikhana recently featured a poem by someone who is not on the usual Unitarian lists: Edmond Bordeaux Székely, although he was the grandson of Sándor Székely, a Transylvanian Unitarian bishop, who was himself a poet, and is buried in Cluj (Kolozsvár).

There are three poems by Edmond Bordeaux Székely at the Poetry Chaikhana site:

• God Speaks to Man
• Do not wait for death (from The Communions)
• I will praise thy works (from The Communions)