This study begins by summarizing the life and literary accomplishments of Antonio Colinas, a contemporary Spanish poet, and his development as a writer over the past forty years. The proposal is that Colinas' poem Sepulcro en Tarquinia (1975) is the basis for his novel Larga carta a Francesca (1986). Chapter two introduces the poem and analyzes its language, imagery, and main themes, among these love, illness, and death. The following chapter compares the themes, language, imagery, and cultural references (Italy) between the poem and novel, determining that all of these coincide in some way except the ending of the novel. Chapter four concludes that Colinas rewrote Sepulcro in Larga carta eleven years later, with a different ending, because of changing philosophies and his relatively recent incorporation of Taoist thought into his writing.