As it happens, Tudor was born the same year as Owen, in a town not far away.
Henry Tudor, who had a weak claim to the throne, became Henry VII, founding the Tudor dynasty.
The Tudor period is well-trodden ground in historical fiction and I admit I picked this book up wearily, thinking I knew it all.
1779, from Welsh surname Tewdwr, used of the line of English sovereigns from Henry VII to Elizabeth I, descended from Owen Tudor, who married Catherine, widowed queen of Henry V. Applied from 1815 to a style of architecture prevalent during these reigns. The name is the Welsh form of Theodore.