I am so sorry for the late answer. Thank you for this kind reply. I am planning a family history. This Baroness Stieglitz was the husband of Frederic Lewis von Stieglitz, a son of a saxon, who came about 1802/3 to Ireland. Later Frederic and his brothers and sisters emigrated to Tasmania and Australia. Frederic and some of his brothers returned to Armagh and Tyrone (see the 2nd reply). They were very lucky there and could buy seats and lands again. Frederic was the luckiest, he married here Hester Blacker. Some years after his dead, she received "for her lifetime" Carrickblacker, the seat of her family. In her later years, she died 1899, she was very helpful for the community.
So 1000 thanks for your story !!
Your Leo Stieglitz