Davano for davenport

[Wendalyn Nichols]

Anyone--Joan?--familiar with "davano" as a short form of "davenport" in
regional American speech? (Sorry, I only own volume 1 of DARE.) I'm doing
some work for a British publisher and remembered my grandmother's "davano"
when I was correcting their entry for "davenport." She was born in 1911, in
Nebraska, of Pennsylvania Dutch stock, and moved to Montana in her
twenties. This is the same woman who called parmesan '/par MEE zhun/
cheese', so I'd like to know if "davano" is just another example of her idolect.