In 206, Sophonisba had been betrothed to the King Masinissa, a leader of the Massylii or eastern Numidians who served along with Gisco against Rome in Hispania, in order to conclude the diplomatic alliance between Carthage and the Massylii. However, the Carthaginian Senate prohibited the wedding and ordered Sophonisba to marry Syphax, chieftain of the western Masaesyli, who up to that point had been allied to Rome. Cassius Dio suggests that this was because Syphax was considered a better ally, while Appian tells Syphax was in love with Sophonisba and actively pressed for the marriage, harassing Carthage with revolts and threatening attacks alongside Roman forces until they conceded. In any case, Sophonisba married Syphax in 206, turning him into Carthage's greatest ally in African terrain. Meanwhile Masinissa, disgruntled by the circumstances, secretly allied himself with Scipio Africanus and returned to his lands. Some believe those accounts might be embellished, as Livy implies Masinissa met her for the first time after the Battle of Cirta, but this is not entirely incompatible with the previous.