Pet form, originally Scottish, of Alexander and Alexandra. As a girl's name, particularly, it is sometimes used independently, especially in the United States. It is also used as a nickname for someone with a crop of ‘sandy’ (light reddish-brown) hair.
Scottish: Anglicized form of Gaelic Mac an Phearsain ‘son of the parson’ (see Parsons). This is the surname of various ecclesiastical families in Aberdeenshire and Argyll; it is also established in northern Ireland.