here's Edouard precise date of death
http://www.rootschat.com/links/01szc/
I found some Michels from Luxemburg living not far from Villeblevin in the 19th century.
As you said the child may have been staying with family (or a foster mother).
As manukarik said , you'll have to ask for his "acte de décès" at Villeblevin's mairie.
Wow, thank you jroger, I am thrilled to be able to pass this on to my friend. A bit of background, Nicholas Michels and Catherine Carville were married in Ireland in 1911, then moved to France. They had two boys, Jacques born in July of 1912 and then Eduoard in 1914. Catherine died in 1915. Nicholas' family did indeed live in the Luxemburg area of France so maybe those Michels are related. I believe you are right and that perhaps Edouard was living with family members in Villeblevin.
I will let her know where to apply for Eduoards dc and perhaps she can find out where he is buried. she is going to be thrilled with all of this information
A big thankyou to jroger and manukarik for responding to my post.