Interesting. One of Philip Eastman Burke's other daughters, Lucretia, Laura's sister, was my great great grandmother. Lucretia married James Legard/Le Garde, my great great grandfather, who was born at Fort Edward in 1803. They must have met in fort Edward and were married abt. 1829.
James and Lucretia's daughter, Ella, my great grandmother wrote a list, which I have, of her mother's siblings. They match the list of children of Philip Eastman Burke on p. 34 of the Alvord-Burke Memorial.