Michael Withers is one of the gunsmiths who agrees (is compelled!) to make muskets to help satisfy the quota imposed on Lancaster County by the Pennsylvania assembly. (He also served on the local committee in Strasburg Township.) The Lancaster Committee of Observation & Inspection papers, which I've been working on for a while now, mentions him a few times.
Committee Meeting, 10 November 1775:
Michael Wither appeared in Committee and agreed to set to Work as soon as he hath compleated a few Guns which he hath now in hand and make Muskets & Bayonets for this County (part of the Number required from this County by the Honorable House of Assembly) at the Philadelphia Prices and that he will confine himself & his Workmen to that Work & carry on the same as expeditiously as he can & that he will deliver in to the Commissioners & Assessors of this County or to this Committee as many Muskets & Bayonets as he can possibly get compleated between this time & the 1st Day of March next at the prices aforesaid according to the Pattern sent to this Committee by the Committee of Safety.
Committee Meeting, 16 April 1776:
Mr. Charles Hamilton says—One Winter of Maryland having some dealing with Mr. Hamilton about 6 Weeks ago mentioned that he had engaged some Arms from Michael Wither & others and requested they might [be] lodged with him until he (Winter) sent for them. Wither sent his packed up in a Box about two weeks ago—Eberly brought in Bayonets which were afterwards put in boxes in Mr. Hamilton’s store—a Box of Gun mountings came from William Ross’s to Mr. Hamilton’s to be ready for the Waggon—Mr. John Henry was in Company when Mr. Winter requested Mr. Hamilton to take charge of these things for him—another box of Gun Barrels came to his Store but he don’t know from whom.—Mr. Hamilton received Letters from Winter and Isaac Perkins to deliver these things, to a Person who had charge of a Waggon sent for them—he did not purchase any of these Articles for Winter or Perkins.
Alex Hamilton says—2 large Boxes & a small one with Arms, &c. went from his Brother’s Store into the Waggon for Maryland— he thinks the large Boxes contained Gun Barrels—& the small one Gun mountings—says he thinks the small Box of mountings was brought to the store by Michael Wither—he thinks Mr. Henry & Mr. Dickert sent the Boxes of Barrels to the Store—don’t recollect who left the Bayonets there.