The name Alloa has been given many meanings, some more credible than others.
In 1398, a royal charter spells it as Always.
Dr. L. McLean Watt connects it with the Celtic ath-luath pronounced ah-looa meaning a swift ford.
The Statistical Account of 1795 records a charter granted by King Robert in 1315 to Thomas de Erskine where it is spelt Always.
Subsequently Aulaway, Aulway, Alloway
The Statistical Account of 1841 adds, that “in ancient Gothic al
signifies water and aull way would signify the way to the sea.”
Rev. Dr. Jamieson
The Ordnance Gazetteer of Scotland 1894-5 records it as possibly derived from the Scottish Gaelic word ail-mhagh, which means rocky plain.
Another version attributes the name to the Roman word Alauna, mentioned by Ptolemy.