Sources & Information:
Martha Severance of Eastham. Martha (Severance) Ellis was appointed administratrix of husband John Ellis estate January 7, 1712-13, and on June 23, 1717, widow Ellis and her four children were baptized. Reference: Children, Benjamin, Joseph, John, and Thankful Ellis. [Smith II p162].

There are some variances in Individual Records, Family Search @ Ancestral File, see
http://www.familysearch.org/Search/af/individual_record.asp?recid=15272435.
It shows Martha Severence (note spelling with letter e instead of letter a), Events(s): Born: Abt 1686, Worcester, Massachusetts, Died: Aft 23 June 1717. Where as I have her Born: Abt 1684, Harwich, Barnstable Co, Massachusetts. There is no information as to Martha Severance parents available. It indicates Marriage and Spouse: John Ellis, on 21 June 1706, Eastham, Barnstable, MA.
This is in agreement according to The Commonwealth of Massachusetts, Copy of Record of Marriage, Town of Orleans. "I, the undersigned, hereby certify that I am clerk of the Town of Orleans that as such I have custody of the records of the marriages required by law to be kept in my office; that among such records is one relating to the marriage of John Ellis and Martha Severance, date of Marriage June 21, 1706, Place of Marriage, Eastham, Massachusetts. And I do hereby certify that the foregoing is a true copy from said records. Witness my hand and seal of said Town of Orleans on this 15th day of May 1980, Clerk." This found in Year 1706, Vol 5, Page 341, No. 3, with seal affixed.

Individual Record for MARTHA SEVERENCE (again note spelling), (AFN:LTMC-5N), shows Submitters: Ed Beckstrom, Rt 1, Box 514, Equality, AL 36026. Submission: AF91-101871 Clarence Walton Fear, 1207 Amond Street #601, Syracuse, N.Y. 13210. Submission: AF97-122671.

Individual Record for MARTHA SEVERANCE <familysearch.org> (again note spelling), shows J. Cornelius, 5054 Triana Street, San Diego, CA 92117-3123 as the submitter. Shows father as Joseph SEVERANS & mother as Martha Worden. Husband as John Ellis and married on 21 Jun 1706, Eastham, Barnstable, Ma.

Regarding 12 Generations of Descendants fromJohn Stout, & More. Including Martha Severance, Parents, Spouse, children & descendants. RootsWeb'sWorld Connect Project. <RootsWeb.com>.