Editing Gustaf V (section)

===First years===
[[File:Portrett av arveprins Oscar (senere Oscar II) og prinsesse Sophie med familie (6961203929).jpg|thumb|left|Prince Gustaf (far left) with his parents and brothers in 1865.]]
Gustaf V was born on 16 June 1858 in [[Drottningholm Palace]] in [[Ekerö Municipality|Ekerö]], [[Stockholm County]], the son of [[Oscar II of Sweden|Prince Oscar, Duke of Östergötland]] and [[Princess Sofia of Nassau]]. His father was a younger son of the reigning king, [[Oscar I of Sweden|Oscar I]], and as the king's eldest son, [[Charles XV of Sweden|Crown Prince Charles]] had no surviving sons, it could be expected that the new-born prince would one day inherit the Swedish throne. At birth he was created [[Duke of Värmland]], and on 12 July he was baptised ''Oscar Gustaf Adolf'' at the [[Royal Chapel (Sweden)|Royal Chapel]] of the [[Stockholm Palace]] by the [[Archbishop of Uppsala]], [[Henrik Reuterdahl]].

The following year, his brother [[Oscar Bernadotte|Prince Oscar]] was born, followed by [[Prince Carl, Duke of Västergötland|Prince Carl]] in 1861, and [[Prince Eugen, Duke of Närke|Prince Eugen]] in 1865. The family lived in the [[Arvfurstens palats]] (''Palace of the Hereditary Prince''), an 18th-century palace located at [[Gustav Adolfs torg, Stockholm|Gustav Adolfs torg]] in [[central Stockholm]], and the summers were spent at [[Sofiero Castle]] near [[Helsingborg]] in [[Scania]], which the father acquired in 1864. During his early years, the prince was considered to have a weak body constitution, and as a consequence he was treated with [[electrotherapy]] on 10 May 1871.<ref>{{cite book|first=Fritz|last=von Dardel|title=Minnen, Fjärde delen 1871–1872|publisher=P.A. Norstedt & Söners förlag|location=Stockholm|year=1913|page=37|language=sv}}</ref>

The three eldest princes began their schooling at the newly founded Beskowska School in [[Östermalm]] in Stockholm in October 1869. Among the prince's classmates at the school was [[Hjalmar Branting]], who went on to become leader of the [[Swedish Social Democratic Party]] and three times [[Prime Minister of Sweden]].