Ambler is a borough in Montgomery County, Pennsylvania, United States. It is located approximately 16 miles north of Center City Philadelphia. The historical territory of the Lenape Native American tribe was in the Delaware Valley in an area spanning from Cape Henlopen in Delaware, north to the lower Hudson Valley in southern New York. The area in the south, in…Ambler is a borough in Montgomery County, Pennsylvania, United States. It is located approximately 16 miles north of Center City Philadelphia. The historical territory of the Lenape Native American tribe was in the Delaware Valley in an area spanning from Cape Henlopen in Delaware, north to the lower Hudson Valley in southern New York. The area in the south, including present-day Philadelphia and nearby Ambler, was the home of Unami-speaking Lenape. The Lenape established a peace treaty with Quaker William Penn in the 1680s.