My great grandmother's maiden name was Martha (Mattie) Sevedge. She was born in Texas approximately 1870s, married my great grandfather Charles William Morgan, and bore my grandfather George William Morgan in 1899, in Tyrone, Missouri. This is all of the information I have at this point. Does she fit in with the Sevedges that you have found? Sincerely, Toneata Martocchio-Whitely, JD