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.
English and Scottish: habitational name from any of various places, for example in the Scottish Borders and in Cheshire, Lancashire, Lothian, Northumberland, and North and West Yorkshire, called Harwood or Harewood from Old English hār ‘gray’ or hara ‘hare’ + wudu ‘wood’. This name has also become established in Ireland.