Ichabod Bumpus was born in Rochester, Plymouth Colony (now Massachusetts) on 10 September 1685. The birth record does not identify his parents. Icabod Bumpus, son of Jacob, was baptized on 26 June 1687 in Scituate, Massachusetts. 
Ichabod Bumpus and Sary Cumbs were married in Rochester, Massachusetts, on 20 January 1718/9.
His children included Rachel Bumpus, born 9 June 1719. She married Mills Slye in Glocester, Rhode Island, on 29 June 1741.
From Settlers of Beekman Patent: m1 20 Jan 1718/19 Sara/Sary Combs/Cumbs, parentage unknown, poss dau of Anthony and Dorcas (Woodin) Combs. (BT 23 July 1919, 7639) m2 abt 1732 [FJD] Susanna Wanton, b 21 Oct 1704 dau of John and Mary. Icahabod and and Sarah were charged with fornication before marriage in Plymouth Co in Sep 1720. Purchase land from Wing 21 Jan 1711/12. (Benjamin Bumpas also).
↑ Massachusetts: Vital Records, 1620-1850 (Online Database: AmericanAncestors.org, New England Historic Genealogical Society, 2001-2016). Rochester, Vol. 1, page 63.
↑ "Massachusetts Births and Christenings, 1639-1915," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VQ67-R51 : 4 December 2014), Ichabod Bumpus, 10 Sep 1685; citing ROCHESTER, PLYMOUTH, MASSACHUSETTS, ; FHL microfilm 0873753 IT 1-2.
↑ Massachusetts: Vital Records, 1620-1850 (Online Database: AmericanAncestors.org, New England Historic Genealogical Society, 2001-2016). Scituate, Vol. 1, page 62.
↑ Information from George Ely Russell, FASG, "Corrections for the April 2005 Installment," The American Genealogist. New Haven, CT: D. L. Jacobus, 1937-. (Online database. AmericanAncestors.org. New England Historic Genealogical Society, 2009 - .) Vol. 80 (2005), page 235.
It may be possible to confirm family relationships with Ichabod by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree:
Is anyone actively working on this line? I'm working to resolve some duplicate profiles for Ichabod Bumpus. Based on the probate info, I'd like to disconnect son Ichabod that's attached. I can't see any evidence that John had a son Ichabod. (I think he is the same actually son of Jacob attached to the wrong parent).