Adelasia of Torres (1207-1259) was the Judge of Logudoro from 1236 and Judge of Gallura from 1238, while Adelasia del Vasto (c. 1075 – 16 April 1118) was the third wife of Roger I of Sicily and mother of Roger II of Sicily, as well as Queen consort of Jerusalem due to her later marriage to Baldwin I of Jerusalem, as his third wife.
Adelasia ed Aleramo (1806) is an opera composed by Johann Simon Mayr.
Due to similar-looking names like Leontine and Caroline, it has also been used as a feminine name from at least the mid-1800s onwards.
Once a flower name, Maudelen Wort was an alternative name for the Great Daisy.