This name is also used in Georgia, where it is usually a short form of Andria (= Georgian form of Andrew) - but there are also cases where it is a short form of Andronike (= Georgian form of Andronicus).In Georgian, Andro is written as: ანდრო. [noted -ed]
Usages: Scots (Archaic)
Meaning: Variant of Andra.
http://dmnes.org/cite/Andro/1506/RegDunf
https://www.scotslanguage.com/Names_in_Scots/Names_in_Scots_-_Personal
https://www.dsl.ac.uk/entry/snd/snds4675
(Information from name #240205 originally submitted by user cutenose)