Lord Gendry Baratheon was made the Lord of Storm's end on the orders of Aegon (Jon) Targaryen.
Became a father with Arya Stark but they never married. After when the wars and battles were over.
Lord Robert Baratheon, next Lord of Storm's end even though that he was illegitimate born.
Lord Gendry Baratheon married Lady Marigold Buckler.
Lady Marigold Buckler, lady of Storm's end
Their Children :
Lord Eric Baratheon. The spare of house Baratheon.
Lord Edmund Baratheon
Lady Cassanna Baratheon
Lady Haelena Baratheon