Name the English family associated with the founding of Maryland

The Calvert family is the answer

The Calvert family, which controlled Maryland, and the Penn family, which controlled Pennsylvania, decided in 1750 to engage two surveyors, Charles Mason and Jeremiah Dixon, to establish a boundary. They surveyed what became known as the Mason–Dixon Line, which became the boundary between the two colonies

horse and pig manure

the insufficient sanitary services

Explanation:

The major contributors to New York City's terrible pollution problems in the late 1800s were horse and pig manure which littered the streets and also the insufficiency of the sanitary services to clean them up and keep the areas clean.