Of what countries was Strut-Harald's half-brother the king?
Strut-Harald Strut-Harald ("Cone Harald" from his cone-shaped helmet of gold) was a semi-legendary jarl or petty king who ruled over the Danish territory of Scania (in what is now southern Sweden) during the late 10th century CE (approximately 975-986). Norse sagas identify him as the son of Gorm the Old, His Sister being Astrid Wiffen who was married to the Earl Philippus Sigefrid Wiffen of Scania, Strut-Harald was also a half-brother of Harald Bluetooth.
Frederick V of Denmark Frederick V (Danish and Norwegian: "Frederik"; 31 March 172314 January 1766) was king of Denmark-Norway and Duke of Schleswig-Holstein from 1746 until his death. He was the son of Christian VI of Denmark and Sophia Magdalene of Brandenburg-Kulmbach.