Family name origins & meanings
- Spanish (Millán) : variant of Milían (see Milian).
- Galician : patronymical name from Millán, from a reduced form of a personal name from Latin Aemilianus (see Milian).
- Galician : in some cases, possibly a habitational name from any of the places in Galicia called Millán, from Latin villa Aemiliani ‘villa of Aemilianus’.
- Scottish : shortened form of McMillan.