Early 1900s. It's in Konx Om Pax.

Thanks.

Roger Casement was also buried in a nameless grave, but his execution was many years later.

There goes that theory.

The Poet Abroad — 1904 Snowdrops
The Poet — 1907 Konx om Pax
The Poet "retires up" — 1909 Sword of Song
The Poet and his Muse — 1910 Winged Beetle
The Poet at Bay 1910 — Equinox I (4)