A more thorough explanation:

An alderperson is a member of a city council or other local governing body. They are also known as aldermen.

For example, in some cities, the city council is made up of alderpersons who are elected by the people to represent their interests and make decisions on their behalf.

The term alderperson is used to be more inclusive and gender-neutral than the traditional term alderman, which was used to refer to male members of the council.

Overall, an alderperson is an important figure in local government who helps to shape the policies and decisions that affect the community they serve.