Still No Sign of Magdalena, but Pay Dirt on Jacob and George

I've searched using a variety of strategies and sources, but still can find no trace of big sister Magdalena Orth, born 1829 (in Retschwiller), landed in New York from Le Havre on a ship named The Virginia—July 2, 1849. I searched marriage records in the USA (assuming that Magdalena most likely marries, and thinking that marriage records might be the one place where her maiden name would appear). I searched the death records. I searched US naturalization records (apparently only men became citizens). I searched every Magdalena (no matter what her last name) who came from France and is recorded on the 1860 US Federal Census (there are 21). I searched the ship's manifest, for names that coincided with this list, thinking that she might have married a fellow passenger, however the ship's manifest is an incredibly illegible document. I searched for any records I could find of each of those 21 Magdalenas, and was able to eliminate many—others simply yielded no clues.

Unproductive as my search for Magdalena was, it yielded the wonderful surprise of the petitions for naturalized citizenship filed by both Jacob Orth and George Orth—the brothers. Their petitions were each filed in the Western District of Pennsylvania—Pittsburgh. Jacob's was filed and granted on 5 April 1858—at the age of 21.  George's petition was filed and granted on 20 March 1860—also at the age of 21. (They both have beautiful, if shaky, penmanship.)