Question: Who is Gregory Fiennes, 10Th Baron Dacre's sibling-in-law?
Sentence (from "Gregory Fiennes, 10th Baron Dacre"): Gregory Fiennes, 10th Baron Dacre (25 June 1539, Hurstmonceaux, Sussex – 25 December 1594, Chelsea, Middlesex, England) was an English courtier.
Relevant evidence: No