Riikka

Swedish and Finnish feminine form of FREDERICK.

English form of a Germanic name meaning "peaceful ruler", derived from frid "peace" and ric "ruler, power". This name has long been common in continental Germanic-speaking regions, being borne by rulers of the Holy Roman Empire, Germany, Austria, Scandinavia, and Prussia. Notables among these rulers include the 12th-century Holy Roman Emperor and crusader Frederick I Barbarossa, the 13th-century emperor and patron of the arts Frederick II, and the 18th-century Frederick II of Prussia, known as Frederick the Great.

The Normans brought the name to England in the 11th century but it quickly died out. It was reintroduced by the German House of Hanover when they inherited the British throne in the 18th century. A famous bearer was Frederick Douglass (1818-1895), an American ex-slave who became a leading advocate of abolition.

Finnish feminine form of HENRY.

From the Germanic name Heimirich which meant "home ruler", composed of the elements heim "home" and ric "power, ruler". It was later commonly spelled Heinrich, with the spelling altered due to the influence of other Germanic names like Haganrich, in which the first element is hagan "enclosure".

Heinrich was popular among continental royalty, being the name of seven German kings, starting with the 10th-century Henry I the Fowler, and four French kings. In France it was rendered Henri from the Latin form Henricus.

The Normans introduced the French form to England, and it was subsequently used by eight kings, ending with the infamous Henry VIII in the 16th century. During the Middle Ages it was generally rendered as Harry or Herry in English pronunciation. Notable bearers include arctic naval explorer Henry Hudson (1570-1611), British novelist Henry James (1843-1916), and American automobile manufacturer Henry Ford (1863-1947).