The Maryland state seal or crest:
The design alludes to the coat of arms of George Calvert, Lord Baltimore (1580-1632), which quartered the family arms of Calvert, a pattern of yellow and black vertical stripes, with the family arms of Crossland, which featured a red and white cross bottony. Lord Baltimore had received a grant of land on the Potomac River in 1632 from King Charles I and named it Maryland after the King's wife, Queen Henrietta Maria.
Cross Bottony:
A cross with the ends of the arms
bottony (or
botonny, i.e. "furnished with knobs or buttons"), i.e. shaped like a
trefoil—and so it is sometimes called a
cross trefly.
The seal depicts a farmer and a fisherman with their arms resting on the Calvert and Crossland family crests, this was the seal of Maryland until it was changed post war, replacing the eagle with a crown.
Many Marylanders (CSA) wore the bottony cross on their uniform jackets and/or kepis, in fact the Maryland Line wintered at Hanover Junction in 1864, many buttons, buckles and crosses have been recovered from that area. The cross below was once a brass silver plated piece, but 150 years of ground action leaves only the brass cross.