what was his relation with the latter?
Eurydice is Orpheus wife
Orpheus
The most famous story in which Orpheus figures is that of his wife Eurydice (sometimes referred to as Euridice and also known as Argiope). 
what are duino elegies? A collection of ten elegies written by the Bohemian-Austrian poet Rainer Maria Rilke (1875–1926) where was the poet born? He was born René Karl Wilhelm Johann Josef Maria Rilke in Prague, capital of Bohemia what happened  to her in paris? Rilke left home and travelled to Paris to write a monograph on the sculptor Auguste Rodin. what are a few of his famous works? "Duino Elegies", "Sonnets to Orpheus", "The Notebooks of Malte Laurids Brigge", what is the symbolism used in the second work? The work is based on the myth of Orpheus and Eurydice. what is the origin of the former name? A probable suggestion is that it is derived from a hypothetical PIE root 'orphan, servant, slave' and ultimately the verb root 'to change allegiance, status, ownership.' Cognates could include (; 'darkness') and (; 'fatherless, orphan') from which comes English 'orphan' by way of Latin.
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Orpheus [SEP] Death of Eurydice
The most famous story in which Orpheus figures is that of his wife Eurydice (sometimes referred to as Euridice and also known as Argiope). While walking among her people, the Cicones, in tall grass at her wedding, Eurydice was set upon by a satyr. In her efforts to escape the satyr, Eurydice fell into a nest of vipers and suffered a fatal bite on her heel. Her body was discovered by Orpheus who, overcome with grief, played such sad and mournful songs that all the nymphs and gods wept. On their advice, Orpheus traveled to the underworld. His music softened the hearts of Hades and Persephone, who agreed to allow Eurydice to return with him to earth on one condition: he should walk in front of her and not look back until they both had reached the upper world.