The term Celtiberi appears in accounts by Diodorus Siculus,[5] Appian[6] and Martial[7] who recognized intermarriage between Celts and Iberians after a period of continuous warfare, though Barry Cunliffe says "this has the ring of guesswork about it."[8] Strabo just saw the Celtiberians as a branch of the Celti.[5] Pliny the Elder thought that the original home of the Celts in Iberia was the territory of the Celtici in the south-west, on the grounds of an identity of sacred rites, language, and the names of cities.[9]