Hi, I would like to know, what foreing language can William and Harry speak... I tried to find any information on wiki and other official web.. but I didn´t success
Neither William nor Harry can speak any language fluently other than English. William did take Spanish to GCSE level ( Grade 10 in high school) Harry didn't take any languages at GCSE or A level ( grade 12), William didn't take any language at A level. Both probably know some basic French as it's compulsory at some early level in the UK and latin since that's taught at Eton. ( Beatrice and Eugenie both have GCSE French, no languages at A-level)
William knows a little bit of Swahili from being in Kenya and Harry maybe would have learnt some Afghani ( Farsi?) phrases. He certainly learnt Iraqi ones when he was preparing to serve in Iraq, it was part of his squadron's training.
King Alfonso and Queen Victoria Eugenia when they first met communicated in French, Alfonso knew very little English and Ena no Spanish.
Queen Sofia always spoke to her children in English and even employed British nannies to make sure they would be fluent English speakers. When Sofia and Juan Carlos first got together a common language was a problem. He spoke fluent Spanish, Italian, Portugese and English badly, she spoke fluent German ( she attended boarding school in Germany) English and Greek.