LINQ: How to convert the nested hierarchical object to flatten object

How to convert the nested hierarchical object to flatten objects by using LINQ? I know that we can easily use foreach loop to achieve that. But I'm wondering if there is a way to write it in LINQ.

class Person{
   public int ID {get;set}
   public string Name {get;set}
   public List<Person> Children {get;}
}

Data :

ID   : 1

Name : Jack

Children

2 | Rose 

3 | Paul

I like to convert this data into flatten format like below.

1 | Jack 

2 | Rose 

3 | Paul

How can we do it with Linq?