Write a function/method that returns a collection of ancestor names.
{
"name": "Aaron",
"mother": {
"name": "Becky",
"mother": {
"name": "Joanne"
},
"father": {
"name": "Donald"
}
},
"father": {
"name": "Steve",
"mother": {
"name": "Patricia"
},
"father": {
"name": "Charles"
}
}
}