English: variant of Loomis.
> Lomis
English: habitational name from a lost place near Bury in Lancashire, recorded in the Middle Ages as Lumhalghs, and apparently named with the Old English elements lumm ‘pool’ + halh ‘nook’, ‘recess’.
(Dictionary of American Family Names, Oxford University Press)
http://www.ancestry.com/search/SurnamePage.aspx?ln=Loomis&fn=&sourcecode=13304&html=b