Found the poem by John. S. Manifold at Griesly Wife
It is "griesly" and "Griesly Wife" is the title. The song in the DT, Griesly Bride," is a revision.
You will find more bush poetry at www.bushpoetry.com.au

Thread 26004 has comment by Bob Bolton on Manifold. Bolton says Manifold liked old usages, hence "griesly." Griesly Wife