My ancestor Georg Gehling had a brother named Martin (Joannes Martinus) Gehling (3-22-1777 to 5-26-1853) who married Margaretha Troll, daughter of Niklaus Troll and Margaretha nee Bruenig. The Margaretha who married Martin died in Feb. of 1842. Her children were Eva Margaretha (1810), Kaspar (1812), all born in Kitzingen, and Regina (1814) and Franz Joseph (he only lived to be 14, 1817 to 1831), both born in Gossmannsdorf, Bavaria. My line is primarily from Gossmannsdorf.
This is the only info I have in regarded to Troll lineage. The inter-relation of the name Breunig shows up later again in amongst the marriages of people in my Gehling line. Breunig was a magistrate or something like that in Gossmannsdorf in that era of the 1800's.