High Quality Content by WIKIPEDIA articles! Sobhuza I (Ngwane IV) Dlamini (ca. 1780 - 1839?) was king of Swaziland, from 1805(?) to 1839(?). Born around 1780, his father was Ndvungunye (Mavuso II, a.k.a. Zikhodze), and his mother was Somnjalose Simelane. He was called Somhlolo, "the Wonder," upon his birth either because his father had been killed by lightning before he was born, or because of certain irregularities of his delivery, or both. Swazis celebrate Somhlolo Day every September 6 as their Independence Day.