Question: Who is the paternal grandmother of Fredericka Of Saxe-Gotha-Altenburg?
Sentence (from "Frederick II, Duke of Saxe-Gotha-Altenburg"): He was born in Gotha, the fifth child and first son of Frederick I, Duke of Saxe-Gotha-Altenburg and Magdalena Sibylle of Saxe-Weissenfels.
Relevant evidence: Yes