I'm creating a half Japanese half Chinese character and I'm trying to figure out whether or not 宁和 can be used as a name. I'm also wondering if it means to aspire to peace and is read a "ninghe".
宁和 can be used as a real Chinese name. 宁 is a common family name and 和 is totally ok for a given name.
When used as a family name, 宁 pronounced as ning4. With such pronunciation, it also can mean "rather", like 宁死不屈(rather die than surrender).
When pronounced as ning2, it means quiet/peace.
To be clear, people will say ning4和 but won't understand the name as "rather peace". Usually, this name will be considered as "quiet and peace". It is a valid name but won't have the "aspire" to peace.
All the above is for Chinese name, not quite sure if it is allowed to only have 2 characters in Japanese name.
Recommend to use 和宁 with your surname, example: 王和宁