This is about right. Both of her dad's paternal grandmothers are apparently at least 50% Irish (Christiana Brown and Iris Finnegan). Hamilton Brown was a prominent, wealthy Irish slave owner/slave trader and attorney in Jamaica. His descendant Christiana "Miss Chrissy" managed at least one of his plantations. Here is his tombstone and photo: https://www.findagrave.com/memorial/134630249/hamilton-brown
This is about right. Both of her dad's paternal grandmothers are apparently at least 50% Irish (Christiana Brown and Iris Finnegan). Hamilton Brown was a prominent, wealthy Irish slave owner/slave trader and attorney in Jamaica. His descendant Christiana "Miss Chrissy" managed at least one of his plantations. Here is his tombstone and photo: https://www.findagrave.com/memorial/134630249/hamilton-brown