No way did Daniel marry a woman 30 years his senior; Abigail's birthyear has to be a mistake.

1.  Timothy Hopkins.  1932.  John Hopkins of Cambridge, Massachusetts, 1634, and Some of His Descendants. Stanford Univ. Press, Stanford, CA (available as a facsimile reprint from Higginson Books and online by subscription at GenealogyLibrary.com):

p. 110	39.  DANIEL5 (EBENEZER,4 EBENEZER,3 STEPHEN,2 JOHN1), b. probably in Hartford 18 October 1732; m. Thankful Kellogg, b. at Hartford, daughter of Deacon Benjamin5 Kellogg,a b. in Hartford about January 1701-1702, and Abigail Sedgwick, b. in Hartford 3 February 1702 (daugh- aDeacon Benjamin5 Kellogg was son of Samuel,4 Lieut. Joseph,3 of Hadley, Massachusetts, Martin2 of Great Leighs, Essex, England, Phillippe1 of Bocking and Great Leighs, 1583.    Lieut. Joseph3 was Lieutenant of the Train Band in Hadley, whose military service extended over twenty-nine years.  As Sergeant he was in command of the Hadley troops at the famous Turner's Falls Fight against the Indians 18 May 1676. (The Kelloggs in the Old World and the New, p. 25.)
p. 111	ter of Samuel Sedgwick and Mary4 Hopkins). (Kelloggs in the Old World and the New, p. 67.)  He d. about 1776. Daniel5 was a taxpayer in Waterbury 1751, resided at Harwinton and Canaan (Falls Village), Connecticut, and in 1768, when he and his wife signed a deed for land in Canaan, was living in the Oblong, Dutchess County, New York.  He may have lived in other towns before settling in the Oblong, and in them may be found the births of some of his children.  Stephen and Ebenezer fit as probable children, but, lacking recorded births, are thus placed from family evidence.  Mr. Orville Homer Hopkins says that the mother of his grandfather Stephen was a Kellogg, that he recalls his father speaking of his uncles Ebenezer and Daniel, and also remembers his father and an aunt mentioning their Aunt Lydia and the name of Birge.  As confirmatory of these recollections, we have Thankful Kellogg as the wife of Daniel5 Hopkins, and the recorded births of his son Daniel6 and of his daughter Lydia6 who married John Birge.  Daniel's5 inventory, recorded at Sharon, Connecticut, 30 April 1776, gives no names of heirs.      Children born in Harwinton, Connecticut:      LYDIA,6 b. 8 September 1754...
p. 112	Children born elsewhere:      EBENEZER,6 b. 1758... 96.  STEPHEN,6 b. 10 May 1762...      DANIEL,6 bapt. 15 June 1763, at Canaan (Falls Village), Connecticut...