Transferred use of the Welsh surname, in origin a variant of Lloyd. This form of the name results from an attempt to represent the sound of the Welsh initial Ll- using traditional English pronunciation and orthography. From the 1890s to the 1930s it was at its most popular in the United States.
English: from a Middle English personal name, Ailric, Alrich, Aldrich, etc. (Many different forms are recorded.) It represents the coalescence of at least two Old English personal names, Ælfrīc ‘elf ruler’ and Æðelrīc ‘noble ruler’.