Short answers, pulled from the story.
Frederick Tilney entered the world in the Borough of Broxbourne as the eldest son of Sir Philip Tilney and Isabel Thorpe. This family held significant land across Norfolk and Lincolnshire.
The Tilney family titles originated during the Siege of Acre between 1189 and 1191 when ancestors fought in the Third Crusade. Frederick inherited these specific titles from his father Sir Philip after the siege took place over two years before Frederick was even born.
Elizabeth Cheney was the eldest child of Lawrence Cheney who served as High Sheriff of Cambridgeshire. Her mother bore the name Elizabeth Cokayne.
His widow Elizabeth Cheney remarried just one year later to Sir John Say. Sir John Say became Speaker of the House of Commons under King Henry VI.
Their daughter Elizabeth Tilney wed Thomas Howard Earl of Surrey on the 30th of April 1472. That match linked the Tilney bloodline directly to the Dukes of Norfolk.