Chester Greenwood
Chester Greenwood ( December 4 , 1858 – July 5 , 1937 ) , of Farmington , Maine , invented the earmuff in 1873 , at the age of 15 . 
<triplet> Chester Greenwood <subj> December 4, 1858 <obj> date of birth <subj> July 5, 1937 <obj> date of death