Lyric discussion by battaryacid 

it's actually "that is my husband who by secret cruelty..."

and "what think you gnaws at my husband's heart?"

this is a poem by Edgar Lee Masters from the Spoon River Anthology, a collection of poems about different people who lived in the fictitious town of Spoon River.
This song is from the point of view of Ollie McGee, whose husband Fletcher McGee treated her in such a horrible way which the world never knew that she lost her worldly beauty and died. However now Fletcher feels such guilt at ruining his bride that he too is dying. Ollie realises this and proclaims it from the grave.

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