No question, but these boys were Maryland militia (with a smattering of Delaware militia in there at that battle). And, they were mostly the Catholic sons of Irish immigrants who were farmers, shopkeepers, mechanics and such. Thomas Fleming writes about them. They were not poor boys either; this was the regiment that the regular troops made fun of when they first came to NYC as they were one of the few militias to have uniforms. But after the battle, no one made fun of any of them or their memory anymore...
Quite a contrast to later Maryland militia, eh?