Princess Ingeborg was born on 2 August 1878 at her parents' country residence, the
Charlottenlund Palace north of
Copenhagen, during the reign of her paternal grandfather, King
Christian IX. She was the second daughter and fifth child of
Crown Prince Frederick of Denmark, and his wife
Princess Louise of Sweden. Her father was the eldest son of King
Christian IX of Denmark and
Louise of Hesse-Kassel, and her mother was the only daughter of King
Charles XV of Sweden and
Louise of the Netherlands. She was baptised with the names
Ingeborg Charlotte Caroline Frederikke Louise, and was known as Princess Ingeborg. As a granddaughter of Christian IX, referred to by the
sobriquet the "
father-in-law of Europe", Princess Ingeborg was related to several European monarchs and rulers. She was thus a first cousin of the future King
George V of the United Kingdom, Tsar
Nicholas II of Russia, King
Constantine I of Greece and
Duke Ernest Augustus of Brunswick. Princess Ingeborg had seven siblings, the two eldest of whom were Prince Christian (the future King
Christian X of Denmark) and Prince Carl (the future King
Haakon VII of Norway). She was raised with her siblings at the royal household in Copenhagen, and grew up between her parents' city residence, the
Frederik VIII's Palace, an 18th-century
palace which forms part of the
Amalienborg Palace complex in central
Copenhagen, and their country residence, the
Charlottenlund Palace, located by the coastline of the
Øresund strait north of the city. In contrast to the usual practise of the period, where royal children were brought up by
governesses, the children were raised by Crown Princess Louise herself. Under the supervision of their mother, the children of the Crown Princess received a rather strict Christian-dominated upbringing, which was characterized by severity, the fulfillment of duties, care and order. In spite of this austere upbringing, Princess Ingeborg grew up to be a friendly, carefree and quick-witted young woman. ==Engagement and marriage==