Are you sure the family are Dutch? They could have lived in Holland, along the German border, and could have been German.
Do you have any idea where the family lived prior to Arizona? There were a lot of Dutch and German families in New Jersey, Pennsylvania, Ohio and Virginia and they migrated a lot more than we realize,even with dirt roads and covered wagons, they managed to get around a lot.
Have you tried variations of the spelling of the name?
Try Kinter, Kintner, Kentner, Kintzer, Ginther, Gintner, Gunther, are a few of the spellings that appear to be related; due to immigration, language differences, spelling errors of the names were common back in the 1700s and 1800s and even early 1900s