I have a ggg=grandmother3g-grandmother, Margaret Davitt. According to stories passed down in the family, whoshe was born on ship in 1799, and was apparently orphaned on the ship or very shortly after arrival. The first record I can find for her is an 1834 marriage in Philadelphia. She died in 1859 in Illinois; I would love to find records for that also.
The information came from my grandmother's notes made in the mid-1930s, and was probably told to her by her father-in-law, Margaret's husband.