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Ayer is a town in Massachusetts. It was formed in 1871 and was previously called Groton/Shirley. It can be found in Middlesex county and is a part of the Southern registry of deed district. For more information, contact the county at 1 Main/P.O. Box 308, Ayer 01432. On the attached map, Ayer is shown as 18 in Middlesex county.
For information about the state of Massachusetts see Massachusetts Family History Research.