My great grandfather was married twice. how are the people from the first marriage related to me?

or:My great grandfather was married twice. how are the people from the first marriage related to me?or:grandmother in law only by marriage and if the

or:My great grandfather was married twice. how are the people from the first marriage related to me?

or:grandmother in law only by marriage and if their not married it doesn't have any relation to you but their only related by marriage and thats it

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