One interpretation suggests this was while his father still nominally ruled.

At this early stage in its history Japan was already (for the most part) only nominally ruled by the emperor.

He nominally ruled the region until 1528, but failed to subject the Montenegrin tribes to his authority.

Their idea was that it should be ruled nominally by Alexander's heirs, in practice by themselves.

He was proclaimed an Augustus by his father and ruled nominally from 384 to his death in 388.

He was counted as the second King of Númenor, having nominally ruled for a single year.

Though the island was nominally ruled by the sultanate, the political situation there was extremely murky.

The island was nominally ruled by Johor, but the political situation there was extremely murky.

By the mid-13th century, while the island was nominally ruled by the king of England, from c.1260 the effective area of control began to recede.

He ruled only nominally, as true power was in the hands of his mother, Adelaide of Susa.