On this page,

http://freepages.genealogy.rootsweb.ancestry.com/~mackley/Obit_Surname_Image_Pages/Obit_Surnames_A/Obit_Surname_List_Page_AR.htm

I found this copy of an obituary notice for Ella.

http://freepages.genealogy.rootsweb.ancestry.com/~mackley/Library_obits_Jpegs/Obits_A_s/Obits_AR/AR_000156.jpg

I actually bookmarked that in an old folder of genealogy stuff I'm collecting. Based on the text in the obit, it does not appear they had any kids.

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https://www.ancestry.com/1940-census/usa/Missouri/Ella-P-Arconati_31x78f

https://www.findagrave.com/memorial/39110793/ella-p.-arconati