The only Maryland area tribe I found with an "N" beginning was Nanticoke. See:
http://www.nanticokeindians.org/history.cfm
![](http://www.native-languages.org/maryland.jpg)
http://www.native-languages.org/maryland.htm
People: The Nanticoke Indians are a southern offshoot of the Lenni Lenape, considering that tribe their elder kin. Today most people of Nanticoke descent have either merged into Lenape groups or passed into American society, but about 1000 people identifying as Nanticokes still remain today, primarily in Delaware.
History: The Nanticoke tribe originally occupied the area between the Delaware and Chesapeake bays, in what is today Maryland and Delaware. After the British conquest of the east coast, the tribe was granted a reservation near the Nanticoke River, but the British soon disbanded it and forced the Nanticokes off the land. Some Nanticoke people fled north to Pennsylvania or joined the Delawares on their westward migrations to Ohio, Indiana, Oklahoma, and Ontario, Canada. Other Nanticokes remained behind in their traditional territories. Dispossessed and isolated, the Nanticoke tribe became known for sheltering escaped slaves during the early days of American history--one 18th-century recording of "Nanticoke" vocabulary turned out to be Mandinka, a West African language! After emancipation many Nanticokes passed as black, or sometimes as white if they were mixed-race, but despite losing their language and much of their culture, other Nanticoke people have maintained their heritage to the present day.
http://www.native-languages.org/nanticoke.htm
Start with what you do know and can find easily - your parents, grandparents, etc., names, dates, where they lived. Interview all living relatives so you have a record of their memories, though sometimes those may not be reliable, especially once you go back more than a generation or two.
See if you can find them on the census and what the entries say. Usually non-whites are noted and often the primary language is indicated. If you need help finding census, let me know - I can do some look ups on Ancestry.