Thomas Howell Birckhead was the son of Samuel Birckhead; Samuel's will 1786 in Harford County lists him and other children. Thomas Howell's mother was Elizabeth Howell; she was the daughter of Thomas Howell so this must be who Thomas Howell Birckhead is named for. In 1800 Harford County MD, census there is a Dr. Thomas B. so I wonder if this is Thomas Howell Birckhead and he is a Doctor. Elsewhere I found Thomas Howell Birckhead intestate 1819 in Harford County and 2 heirs Sarah and Samuel. I don't know why the other children were not listed. Do you know the names of Thomas Howell birckhead's grandchildren?