Groton, Massachusetts Vital Records, ancestry.com
1672, May 15. William Longley, Lydia---
Groton Historical Series, Samuel A. Green, 1887
Willm Longley & Lidea his wife were maryed May. 15. 1672
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Records of Littleton, Massachusetts, Printed by order of the town, Littleton, Mass., 1900, Ancestry.com
LONGLEY, page 452
William Longley, Sr., d. Nov 29, 1680
William Longley, Jr.,m. May 15, 1672 Lydia, m. 2d Deliverance Pease
John Longley b. 1683, m. 1705 Sarah Prescott who d. 1716, m. 2d 1718 Deborah Houghton.
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Groton, Massachusetts Vital Records, Ancestry.com
WILLIAM LONGLEY and LYDIA, DELIVERANCE PEASE. (Married, May 15, 1672)
Lydia, born 1d. 1m. 1673-4. William, " 17 d. 12 m. 1675. Joseph, " Jan. 6, 1686-7.
(my Note: He married Lydia 15 May 1672)
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Some descendants of William Longley, born England 1614, a land grantee of Lynn, Mass. 1638, died at Groton, Mass., 1680: containing a complete list of the descendants of Isaac7 Longely 1823-1914, up to Jan. 17, 1952. Longley, Robert Dalton, North Anson, Me., Press of Ideal Print Shop, page 7


From -"Who Begot Thee" by Gilbert O. Bent 1903, page 31, Google Books.
"William (2) Longley. d. 1694. Son of William (1). Probably born at Lynn and removed with his father to Groton in 1663. He married (1) at Groton, May 15, 1672, Lydia. He married (2) previous to 1686, Deliverance Crispe, probably the widow of Jonathan Crispe, who died at Groton in 1680. Was a large owner of lands in Groton. He was town clerk of Groton in 1687 and from 1692 until his death July 27, 1694, when he and his family, with the exception of three of the children, were slain by Indians. On Feb. 20, 1880, a monument at the place in Groton where stood William Longley's house, and where the first William Longley had also lived, was dedicated.
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WILLIAM & DELIVERANCE LONGLEY AND THEIR EIGHT CHILDREN, AMBUSHED BY INDIANS & MURDERED IN THEIR OWN HOME:
The expedition against Groton was planned in part by the Indians at a fort called Amsaquonte above Norridgewock, in Maine. It was arranged also in the plan of operations that Oyster River - now Durham, New Hampshire - should be attacked on the way; and the assault on that town was made July 18, 1694, nine days before the one on Groton. At Oyster River more than 90 persons were either killed or captured; the prisoners from the two towns appear to have been taken to Maine, where they were brought frequently together during their captivity.
The story of William and Deliverance Longley's family is a sad one. They were living, with their 8 children, on a small farm, perhaps a mile and a quarter from the village, on the east side of the Hollis Road. Their house was built of hewn logs, and was standing at the beginning of the 19th century. The old cellar, with its well-laid walls, was distinctly visible, and traces of it could be seen to modern times. The site of this house has been marked by a monument bearing the following inscription:

Here Dwelt
WILLIAM AND DELIVERANCE LONGLEY
On the 27th of July 1694
The Indians Killed The Father and Mother
And Five of the Children
And Carried into Captivity
The Other Three.

It is said in Butler's History that those who were captured, in 1694, by the Indians were: Betty, Lydia and John.. Betty died of starvation. Lydia was sold to the French in Canada, became a Catholic, entered a convent and became very zealous and bigoted. She wrote letters to her brother John, expressing her sorrow that he should remain under the influence of a heretical faith through which none could attain salvation.
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Epitaphs from the old burying ground in Groton, Massachusetts, Samuel A. Green
page 245
Lydia was sold to the French, and placed in the congregation of Notre Dame, a convent in Montreal, where she embraced the Roman Catholic faith, and died July 20, 1758, at the advanced age of 84 years.

Source: An Historical Sketch of Groton, MA by Dr.Samuel A. Green printed at Groton, MA 1894
p.42 - p.43 DOCUMENT

"Tuesday, April 24, 1696 - ceremony of baptism performed on English girl, Lydia Longley b. April l4, 1674 at Groton, MA a few miles from Boston in New England. She was the daughter of William Longley and Deliverance Crispe, protestants. She (Lydia Longley) was captured in the month of July 1694 by the Abenaqui Indians and has lived for the past month in the house of the Sisters of the Congregation of Notre Dame. The godfather was M. Jacques Leber, merchant; the godmother was Madame Marie Madeleine Dupont, wife of M. de Maricourt, Ecuyer, Capt. of a company of Marines; she named the English girl Lydia Madeleine.
Signed: Lydia Madeleine Longley
Madeleine Dupont
Leber
M. Caille acting curate

(Note: There has been much discussion on William Longley's 2nd wife. Some, such as Samuel Green (see above info) give William's 2nd wife as Deliverance Crispe. Others say she was Deliverance Pease, daughter of Robert Pease. See notes under William Longley and, 2nd wife, Deliverance Pease)