David Davis, Osterberg v. Union Trust Company…
“ It is true that the title of a purchaser at a judicial sale under a decree of foreclosure takes effect by relation to the date of the mortgage, and defeats any subsequent lien or incumbrance. A lien for taxes does not, however, stand upon the footing of an ordinary incumbrance, and is not displaced by a sale under a pre-existing judgment or decree, unless otherwise directed by statute. ”
