Question: When is Henry Radclyffe, 2Nd Earl Of Sussex's mother's birthday?
Sentence (from "Henry Radclyffe, 2nd Earl of Sussex"): He was a second cousin to among others Thomas Grey, 2nd Marquess of Dorset, Arthur, Prince of Wales, Margaret, queen consort of Scotland, Henry VIII of England, Elizabeth Tudor, Mary, queen consort of France, Edmund Tudor, Duke of Somerset, Katherine Tudor, Henry Courtenay, 1st Marquess of Exeter, Margaret Courtenay and Henry Somerset, 2nd Earl of Worcester.
Relevant evidence: No