Question: Who is Dorothea Maria Of Saxe-Gotha-Altenburg's paternal grandmother?
Sentence (from "Dorothea Maria of Saxe-Gotha-Altenburg"): She was the twelfth child and fourth daughter of Ernest I, Duke of Saxe-Gotha by his wife Elisabeth Sophie, the only daughter of John Philip, Duke of Saxe-Altenburg.
Relevant evidence: Yes