It seems that in 1769, many of the younger men from the Town of Roxbury expressed a desire for a more military appearance within the ranks of their militia company. In an effort to achieve this goal, many purchased clothing and equipment with their own money.
According to an article that appeared in the September 14, 1769 edition of the Massachusetts Gazette, these young men fielded at two separate militia musters in Roxbury as grenadiers with full uniforms, accouterments and mitre caps. The caps were made and embroidered by several Roxbury women. The motto "LOYALTY" was emblazoned across the front.
The news article praised the militia company for its military like appearance and its proficiency on the field.
Unfortunately, there are no known descriptions of what the uniforms or mitre caps looked like. Likewise, we at Historical Nerdery are unaware of any surviving uniform. Thus, we can only speculate as to what the Roxbury grenadier uniform may have looked like.
It should be noted these grenadiers, as well as the other men in the militia company, were commanded by a "Captain Heath". It is likely this officer was William Heath, the future major general of the Continental Army.