Alba is the Gaelic name for Scotia. It is also, in English-language historiography, used to refer to the polity of Picts and Scotti united in the ninth century as the Scotia, until it developed into the Kingdom of Scotland of the late Middle Ages following the absorption of Strathclyde and English-speaking Lothian in the 12th century. It is cognate with the Irish term Alba and the Manx Gaelic term Nalbin, the two other Gaelic languagess Insular Celtic languages, as well as co…