More info about the name "Heidi"
Heidi is a diminutive of Adelheid. Adelheid is a German form of Adelaide. Adelaide originates in Germanic languages and means "graceful and noble". It is the name of many saints and royalty throughout history. Adelaide is also the capital city of South Australia, one of the Australian states. It was named in honor of Adelaide of Saxe-Meiningen, King William's IV wife and the Queen of the United Kingdom.