Just some ideas for A Maryland Civ
Symbol: Red Calvert Cross on a Yellow background
Leader: Cecil Clavert

UA: "The Old Line" +20% Combat Stregnth when defending on friendly territory

UU: "Baltimore Privateer" Replaces Privateer. +5 Combat Stregnth and recieve great person points for each naval unit destroyed.

UB: "Naval Academy" Replaces Seaport. +2 Happiness and international trade routes bring in +3 gold. Crab resources worked by this city provide +2 production, +2 science, and +1 food.

Some Cities:
Annapolis
Baltimore
Fredrick
Bethesda
Gaithersburg
Rockville
Salsbury
St. Mary's City
Ellicot City
Towson
Cumberland
Bowie

Hope you consider this!