man William Moulton‏‎, son of Robert Moulton and Mary Smith‏.
Born ‎ 1617 at of Hampton, Rockingham, New Hampshire, United States, died ‎ Apr 18, 1663 at Hampton, Rockingham, New Hampshire, United States‎, 45 or 46 years, buried ‎ Apr 18, 1663 at Pine Grove Cemetery,, Rockingham, New Hampshire, United States
Alternate death and burial date: 18 Apr 1664 (IGI (International Genealogical Index))

Alternate death date: 18 Feb 1664 (New Hampshire, Death and Disinterment Records, 1754-1947, New Hampshire, Death and Burial Records Index, 1654-1949, www.ancestry.com)

A possible parent to William Molton other than this Robert Moulton, is another Robert Moulton born 1585.

Father: Robert MOULTON b: 1565 in Scratby, Norfolk, England
Mother: Mary SMITH b: 23 Mar 1578/79 in Scrathby, Norfolk, England

Father: Robert MOULTON b: 1585 in Ormesby, Norfolkshire, England
Mother: Mary ? b: 1590

Name: Robert Moulton
Sex: M
Birth: ABT. 1585 in Ormesby, Norfolkshire, England
Death: BEF. 21 Aug 1622 in Martham, Norfolkshire, England

Father: John Moulton b: ABT. 1563 in Ormesby, Norfolkshire, England
Mother: Anne Taylor b: BEF. 1570

Marriage 1 Mary ?
Married: ABT. 1612
Children
Abigail Moulton b: Abt. 1613 in Martham, Norfolkshire, England
William Moulton b: Abt. 1617 in Ormsby, Norfolkshire, England ?
John Moulton b: Bef. 5 Jan 1616/17 in Martham, England
John Moulton b: Bef. 20 Jun 1619 in Martham, Norfolkshire, England
Anne Moulton b: Bef. 21 Jun 1621 in Martham, Norfolkshire, England

Sources:
Title: The New England Historical and Genealogical Register
Publication: The New England Historic Genealogical Society
Repository:
Note: Prokasy Library: NEHGS/Broderbund CD
Call Number:
Media: Magazine
Page: Joy Wade Moulton, "Some Doubts About the English Background of the Moulton Family, Item" 1990, Vol. 144, p 257
Title: The New England Historical and Genealogical Register
Publication: The New England Historic Genealogical Society
Repository:
Note: Prokasy Library: NEHGS/Broderbund CD
Call Number:
Media: Magazine
Page: William Haslet Jones, 141:321

Ancestral File mentions a second wife, Lucy Page, but there is not enough proof.
From "A Genealogical Dictionary of Maine & New Hampshire", p. 500:

MOULTON, William
Hampton, step-son of William Estow. Listed as a servant, age 20, Itemhe came with the family of Robert Page in 1637, in the same emigrationas John, Miriam and Thomas Moulton. He accompanied the Pages toHampton and married their daughter Margaret. He had no Hampton grantuntil the division of commons to proprietors of houselots in 1645. Hewas Selectman in 1649, 1653 and 1658; and a freeman on Oct. 3, 1654.One of five Hampton men who "unadvisedly" signed the 1654 petition infavor of Robert Pike. His will is dated March 8, 1664. He died April18, 1664. The will names wife Margaret, 7 children and one unbornchild; father-in-law Robert Page and brother-in-law Henry Dowexecutors; inventory lists estate worth at 478 pounds. Widow Margaretmarried 2nd on August 2 1671 to Lt. John Sanborn. She died July 13, Item1699.
Children: 4 living in 1655 when William Estow made his will, allunder age in 1664, all but Mary in grandfather's will of 1679:JOSepH, oldest; BENJAMIN; HANNAH, b. 15 Feb. 1652, m. JosiahSanborn; MarY, d. 27 July 1664;
SARAH, b. 17 Dec. 1656, m. 30 Dec. 1674, Jonathan Haines (9 children recorded in Newbury & Haverhill). This Jonathan Haines & 4 childrenwere captured by Indians in 1696 and he was killed by Indians on 22Feb. 1698; RUTH, b. 7 May 1659, m. Richard Sanborn; ROBERT, b. 8Nov. 1661; WILLIAM, b. 25 May 1664, m. Abigail Webster on 27 May 1685and she died 24 July 1723, age 62. His will, trader, 12-30 Oct. 1732, Itemnames 2nd wife Sarah, 9 children, including Sarah born
4 July 1701, m. her cousin Ezekiel Moulton.

Married ‎± 1645 at Hampton, Rockingham, New Hampshire, United States (approximately 18 years married) to:

woman Margaret Page‏‎, daughter of Robert Page and Lucy Ward‏.
Born ‎ 1629 at of Ormesby, Norfolk, England, died ‎ Jul 13, 1699 at Hampton, Rockingham, New Hampshire, United States‎, 69 or 70 years, buried ‎ at High Street Cemetery,, Rockingham, New Hampshire, United States, ‎1st marriage to: William Moulton, 2nd marriage to: Lieutenant John Sanborn

Children:

1.
man Joseph Moulton‏
Born ‎± 1646 at Hampton, Rockingham, New Hampshire, United States, died ‎ Jun 19, 1729 at Hampton, Rockingham, New Hampshire, United States‎, approximately 83 years
2.
man Benjamin Moulton‏
Born ‎ 1648 at Hampton, Rockingham, New Hampshire, United States, died ‎ Mar 28, 1728 at Hampton, Rockingham, New Hampshire, United States‎, 79 or 80 years
Alternate death date: 6 Mar 1727 (New Hampshire, Death and Burial Records Index, 1654-1949, www.ancestry.com)

Alternate death date: 6 Mar 1729 (The New England Historical & Genealogical Register, 1847-2011, www.ancestry.com)
3.
woman Hannah Moulton‏
Born ‎ Feb 15, 1652 at Hampton, Rockingham, New Hampshire, United States, died ‎ Nov 6, 1687 at Hampton, Rockingham, New Hampshire, United States‎, 35 years
4.
woman Mary Moulton‏
Born ‎ 1654 at Hampton, Rockingham, New Hampshire, United States, died ‎ Jul 27, 1674 at Hampton, Rockingham, New Hampshire, United States‎, 19 or 20 years
5.
woman Sarah Moulton‏
Born ‎ Oct 17, 1656 at Hampton, Rockingham, New Hampshire, United States, died ‎ Jul 13, 1699 at Haverhill, Essex, Massachusetts, United States‎, 42 years
6.
woman Ruth Moulton‏
Born ‎ May 7, 1659 at Hampton, Rockingham, New Hampshire, United States, died ‎ May 3, 1685 at Hampton, Rockingham, New Hampshire, United States‎, 25 years, buried ‎ at Pine Grove Cemetery, Hampton, Rockingham, New Hampshire, United States
Alternate birth date: 7 Mar 1659 (New Hampshire, Birth Records, 1659-1900, New Hampshire, Births and Christenings Index, 1714-1904, www.ancestry.com)
7.
man Robert Moulton‏
Born ‎ Nov 8, 1661 at Hampton, Rockingham, New Hampshire, United States, died ‎ Oct 11, 1732 at Hampton, Rockingham, New Hampshire, United States‎, 70 years
Alternate birth date: 8 Sep 1661 (New Hampshire, Birth Records, 1659-1900, New Hampshire, Births and Christenings Index, 1714-1904, www.ancestry.com)
8.
man William Moulton‏
Born ‎ May 25, 1664 at Hampton, Rockingham, New Hampshire, United States, died ‎ Jul 24, 1723 at Newbury, Essex, Massachusetts, United States‎, 59 years, buried ‎ at Sawyer Hill Burying Ground, Newburyport, Essex, Massachusetts, United State
Will proved: 30 Oct 1732