Here you will find the Poem From The Headboard Of A Grave In Paraguay of poet James Whitcomb Riley
A troth, and a grief, and a blessing, Disguised them and came this way--, And one was a promise, and one was a doubt, And one was a rainy day. And they met betimes with this maiden, And the promise it spake and lied, And the doubt it gibbered and hugged itself, And the rainy day-- she died.