WÃ 1\/4 rttemberg ( Ë vÊ É tÉ mË beÉ k ) , formerly known as Wirtemberg , is an area and a former state in southwestern Germany , including parts of the regions Swabia and Franconia . WÃ 1\/4 rttemberg , formerly known as Wirtemberg or Wurtemberg , is an area and a former state in southwestern Germany , including parts of the regions Swabia and Franconia .