I was wandering around our family history tree which we all add to as we find more information. extract.... Her article in thepeerage is here. She was born a member of the Pennell family and adopted by the Croker family. Her birth father, William Pennell, held the office of Consul-General to Brazil while her adoptive father, John Wilson Croker, was Secretary to the Admiralty. Her husband, Sir George Barrow, became 2nd Baronet Barrow, of Ulverstone, co. Lancaster http://www.gogmsite.net/empire-napoleonic-and-roman/1826-rosamund-hester-elizab.html
John Wilson Croker was my relative.
This portrait is on the front cover of the book, Pride and Prejudice. It is a portrait of ..... Rosamund Hester Elizabeth Pennell Croker- Lady Barrow (1809-1906) artist Sir Thomas Lawrence http://en.wikipedia.org/wiki/File:Lady_Barrow00.jpg