According to one membership application in the Sons of the American Revolution, this David McLaughline was actually the son of James McLaughlin (wife's name unknown). The line of descent is through David's daughter Augusta McLaughline and Joseph Vincent.
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There is an obituary for David McLaughlin from Rome, Lawrence County, Ohio that reads as follows:

DIED
In Rome, Lawrence county, O., on Wednesday, July 18, 1855, David McLaughlin, Esq., in the 59th year of his age.

Mr. McLaughlin was born in New Boston, N.H., March 8, 1797. He came to Lawrence county in the month of October 1816, then quite a young man, and the country comparatively new, and stopped for a time with his brother-in-law, the late Judge Green. Subsequently he purchased a farm in Rome township, which he cleared up and put under cultivation, and upon which he continued to live till the day of his death. In 1823 he married Phebe Gillett, daughter of the late Zebylon Gillett, Esq. and sister to Capt. H. N. Gillett, of Rome Township. In 1829 he became the subject of converting grace, and united with the Methodist Church. From that time his highest aim seems to heve been to promote the welfare of his fellow men, as well in a religious point of view, as in acts of public benevolence. It is but just to say here that his wife preceded him by some three years in a religious experience, and her counsels and prayers doubtless had much to do, in the providence of God, in causing him to "seek after the wisdom that cometh from above," as in later years she has shown herself a fit help-meet in every christian and benevolent work. Abou tthis time, there being considerable of a settlement, and no house of worship, his house or barn was frequently the place for holding religious meetings. His house has been emphatically the home of the preachers. 'Twas there they found rest and refreshment, as many an old circuit rider can attest, should he see these lines. He was no sectarian; for he received with open arms all who came commissioned by their Divine Master, and extended to them with equal pleasure his hospitalities. With him it was enough to know that they were engaged in a religious or benevolent enterprise, to enlist his sympathies and co-operation. Though he owned but a small farm, and lived in moderate circumstances, but few persons in the circle of our acquaintance dealt out thier benefits with a more lavish hand. In his own circle, he was foremost in his support of the moral reforms of the day. He was a believer in progress; and being of an independent mind, he was often in advance of others who exhibited more apparent piety than he. He dared to do what he believed to be right, in the face of opposition. Being eager to go on, he often manifested impatience at the delay of his more conservative friends, and not unfrequently gave offence to such by the abruptness of his speech. But he was ever as ready to acknowledge his own errors when pointed out, as to forgive those of others. For many years he occupied the responsible posts of financial Steward of the Circuit and Class Leader, which posts he filled with fidelity and satisfaction to the Church.

During his last illness, which was protracted, being at first a bronchial affectiona and finally ending in consumption, he enjoyed in a high degree communion with his Savior. He had taken the precaution in the early part of his sickness to arrange his temporal affairs for his departure, and had nothing to do but "wait his appointed time till his change should come." He expressed himself at all times as being prepared and ready to go. And toward the close he rather expressed a desire to be gone. He said he could be of no more service here - his work was peace in his own breast; and that he longed to go where he might enjoy uninterruped communion in a more perfect state. To each one who inquired, he had a word of advice and consolation. He admonished his family of their duty, and charged them so to live as to . . . . . (rest of copy missing). Name of paper not noted.

• Married: 1823

1. Lydia McLaughlin b: Feb 1827 in , , Ohio
2. Ammon McLaughlin b: ABT 1829 in , , Ohio
3. Rachel McLaughlin b: 6 Jun 1831 in , , Ohio
4. David McLaughlin b: 8 Aug 1833 in , , Ohio
5. Alvin McLaughlin b: ABT 1836 in , , Ohio
6. Elisha B. G. McLaughlin b: ABT 1838 in , , Ohio
7. Melvin A. McLaughlin b: ABT 1842 in , , Ohio
8. Augusta McLaughlin b: 15 Mar 1848 in , , Ohio

1. Title: Family Records: Pazda, Lisa
   Author: Pazda, Lisa
   Publication: E-mails received from Lisa Pazda over a period of time
2. Title: 1840 United States Federal Census [database on-line].
   Author: Ancestry.com
   Publication: Provo, UT, USA: Ancestry.com Operations, Inc., 2010.
   Note: Name: David Mclaughlin
   [Edwd Mclaughlin]
   Home in 1840 (City, County, State): Rome, Lawrence, Ohio
   Free White Persons - Males - Under 5: 2
   Free White Persons - Males - 5 thru 9: 2
   Free White Persons - Males - 40 thru 49: 1
   Free White Persons - Females - 5 thru 9: 1
   Free White Persons - Females - 10 thru 14: 1
   Free White Persons - Females - 30 thru 39: 1
   Persons Employed in Agriculture: 1
   Free White Persons - Under 20: 6
   Free White Persons - 20 thru 49: 2
   Total Free White Persons: 8
   Total All Persons - Free White, Free Colored, Slaves: 8
3. Title: 1850 United States Federal Census. [database on-line]
   Author: Jackson, Ronald V., Accelerated Indexing Systems, comp.
   Publication: Provo, UT: Ancestry.com, 1999-.
   Note: Name: David McLaughlin
   Age: 54
   Birth Year: abt 1796
   Birthplace: New Hampshire
   Home in 1850: Rome, Lawrence, Ohio
   Gender: Male
   Family Number: 19