Question: Who is Charles Marsack's paternal grandmother?
Sentence (from "Charles Marsack"): Charles Marsack (1747/8 – 22 December 1820) was a British Army officer and landowner who, from seemingly humble origins had made a fortune in India, and according to stories first published in Burke's Landed Gentry in 1894, was reputedly the son of Frederick, Prince of Wales or of King George II by a so-called Comtesse de Marsac.
Relevant evidence: Yes