1.  Marriage Index:  Massachusetts, 1633-1850 (Broderbund CD-231):  not found.

2a.  Clarence Almon Torry.  1985.  New England Marriages Prior to 1700.  New England Historic Genealogical Society, Boston, MA (reprinted 1997, Genealogical Publ. Co., Baltimore, MD):

The "b" indicates the birth date of a child as an indication that the marriage took place before this time.  The locations are known residences of the husband, ending with the husband's place of death.  An entry in Torrey does not imply a marriage in New England; it only demonstrates the presence of a married couple there before 1700.  Torrey is a compilation of published sources, not primary records, so he should be considered a secondary source.

p. 108

BROWN, Samuel (?1656, ?1660-1691) (had Samuel & Bethiah) & Martha HARDING (-1692+); 19 Feb 1682; Eastham

2b.  Clarence Almon Torry.  2015.  New England Marriages Prior to 1700.  New England Historic Genealogical Society, Boston, MA (republished; online at AmericanAncestors.org):

Vol. 1, p. 311

BROWN, Samuel (?1656, ?1660-1691) (had Samuel & Bethiah) & Martha HARDING; 19 Feb 1682; Eastham {MD 5:197, 14:116; W. Brown (1929) 3; Sv. 1:276; Harding 1; Reg. 6:43, 167, 79:381; Barnstable Co. Prob. 1:108, 2:366; Harding (1957) 6}

3.  Massachusetts:  Births and Christenings, 1639-1915 (online at FamilySearch.org):

Name	Gender	Birth Date	Birth Place	Father	Mother	GS Film #
Bethiah Brown	Female	22 Jan 1683	Eastham, Barnstable, MA	Samuel Brown	Martha Harding	778357
Bethia Brown	Female	24 Jan 1683	Eastham, Barnstable, MA	Samuel Brown	Martha Harding	0907350 IT 2-6, 905406
Bethia Brown	Female	09 Sep 1685	Eastham, Barnstable, MA	Samuel Brown	Martha Harding	0907350 IT 2-6, 905406
Martha Brown	Female	24 Jun 1688	Eastham, Barnstable, MA	Samuel Brown	Martha Harding	0907350 IT 2-6, 905406
Samuel Brown	Male	07 Nov 1690	Eastham, Barnstable, MA	Samuel Brown	Martha Harding	0907350 IT 2-6, 905406

.  Find-a-Grave: Entries (online at findagrave.com):

Name	Samuel Brown, Sr	Martha Harding Brown
Birth	Mar. 3, 1656 Eastham Barnstable Co., MA	1662 Eastham Barnstable Co., MA
Death	Dec. 3, 1691 Eastham Barnstable Co., MA	1692 Eastham Barnstable Co., MA
Note		-
Burial	Cove Burying Ground Eastham, Barnstable Co., MA
Inscription	[unmarked grave]	[unmarked grave]
Father	William Brown	Joseph Harding (1629-1685)
Mother	Mary Murdock Brown	Bethia Cooke (1639-1687)
Spouse	Martha Harding Brown	Samuel BROWN
Child	Samuel Brown	-
-	-	-
Memorial #	51533557	112420537

-