Washington P Sedwick  [Thomas Sedwick / Katie Kauffman]11b,13
b. November 25, 1805, Edinburg Mercer County, Pennsylvania3,12
d. February 3, 1847, Edinburg, Lawrence, Pennsylvania3,12
bu Edinburg, Lawrence, Pennsylvania, Edinburg Methodist Cemetery11b  grave  will
m. November 25, 1824, Elizabeth Kiner 12 or Koener2,3

Edinburg was included in Mercer County when it was formed from part of Allegheny, March 12, 1800. It became part of Lawrence County when it was formed from parts of Beaver and Mercer, April 5, 1849.

Elizabeth Kiner  [parents unknown]
b. January 22, 1803, Mercer County, Pennsylvania12,3,8,
d. July 17, 1874, Mercer County, Illinois8,3
bu Suez, Mercer, Illinois, Bridger Cemetery8

Census records:

1830 PA Mercer
1840 PA Mercer
Elizabeth appears:
1850 PA Lawrence
1860 PA Lawrence
1870 IL Mercer

Not much is known of known of Washington P Sedwick, but it has been established that he loved the church; he donated an acre of land in Mercer County, Pennsylvania, for the building of a church.14 Although recent investigations have failed to find any record of it,14 the biography of his son-in-law Adam Kline McQuilling said he was "a Methodist minister"3, and Kathleen McQuilling, a great-grand-daughter, has told me that he was a "circuit-riding preacher." Incidentally, the church was still standing in 1998. Here is an aerial photo of it in 1993.

Washington's widow Elizabeth and most of their sons and daughters moved from Pennsylvania to Mercer County, Illinois, with son Daniel W Sedwick leading the way in 1855.2

Children:

Peter Kiner Sedwick
  b. January 25, 1826, Mercer County, Pennsylvania12
  d. October 20, 1902, New Castle, Lawrence, Pennsylvania12
  bu New Castle, Lawrence, Pennsylvania, Oak Park Cemetery11b
  m. abt 1858, Ottilia C Hemphill11b
John Eli Sedwick
  b. October 27, 1827, Mercer County, Pennsylvania12
  d. May 1895, New Castle, Lawrence, Pennsylvania12
  bu New Castle, Lawrence, Pennsylvania, Greenwood Cemetery11b
  m. November 28, 1852, New Castle Lawrence Pennsylvania, Lois Jane Luce12
Catherine Ann Sedwick
  b. May 28, 1830, Mercer County, Pennsylvania12
  d. November 11, 1832, Mercer County, Pennsylvania12
Sarah Elizabeth Sedwick
  b. May 12, 1832, [Mercer Cpunty] Pennsylvania12,8
  d. March 31, 1918, Aledo, Mercer, Illinois12,8
  bu Aledo, Mercer, Illinois, Aledo Cemetery8
  m. June 15, 1856, New Castle, Lawrence, Pennsylvania, (Jack) Levi Bowers5,12
Daniel Wesley Sedwick
  b. July 31, 1834, Mercer County, Pennsylvania2
  d. January 7, 1924, ALexis, Mercer, Illinois12
  bu Suez, Mercer, Illinois, Bridger Cemetery8
  m. September 3, 1857, Mercer County, Illinois, Frances Adelaide Bridger4 (vol A)
George Washington Sedwick
  b. June 24 1836, Mercer County, Pennsylvania12
  d. September 27, 1912, Highland Park, Lake, Illinois12,15
  bu Viola, Mercer, Illinois, Viola Cemetery11b
  m. 1861, New Castle, Lawrence, Pennsylvania, Caroline Reeble16
William James Sedwick5
  b. July 6, 1838, Mercer County, Pennsylvania12
  d. February 2, 1842, Mercer County, Pennsylvania12
Lavina Ann Sedwick
  b. September 13, 1840, Mercer County, Pennsylvania1,8,12
  d. August 16, 1918 Mercer County, Illinois8,12
  bu Mercer County, Illinois, Norwood Cemetery8
  m. February 16, 1864, Mercer Co, Illinois, James R McLaughlin4 (vol A pg 89)
Margaret Isabel Sedwick
  b. April 4, 1843, Mercer County, Pennsylvania6,12
  d. July 12, 1922, Pasadena, Los Angeles, California6
  bu Pasadena, Los Angeles, California, Mountain View Cemetery7
  m. November 24, 1870, Mercer Co, Illinois, Adam Kline McQuilling3,4 (vol A pg 137)
Catherine Jane Sedwick
  b. May 11, 1845, Mercer County, Pennsylvania12
  d. May 9, 1918, Jevne Twp, Aitkin, Minnesota12
  m. October 1, 1874, Mercer Co, Illinois, James Howard4 (vol A pg 168)

Sources and notes (all sources for this family listed here):

1. Census records, any of those indicated.

2. History of Mercer County, 1903, p. 743.
Posted by Linda C Driscoll at Ancestry: Illinois Mercer

3. Historical & Biographical Record of Los Angeles & Vicinity
Chapman Publishing Co., Chicago, 1901 p. 755-757.
Posted by Linda C Driscoll at Rootsweb: Ohio Fulton and Ancestry: California Los Angeles

4. Illinois Statewide Marriage Index 1763 - 1900
online at http://www.cyberdriveillinois.com/departments/archives/genealogy/marrsrch.html
These records:
GroomBrideCountyDateVol/pgLic
Sedwick, Daniel WBridger, Frances AMercer09/03/185700A/00001027
McLaughlin, James RSedwick, Lavina AMercer02/16/186400A/008900001797
McQuilling, Adam KSedwick, Margaret IMercer11/24/187000A/013700002794
Howard, JamesSedwick, CatharineMercer10/01/187400A/016800003519

5. Obituary of Daniel W Sedwick

6. Obituary of Margaret Isabell (Sedwick) McQuilling
Pasadena (Cailfornia) Star News, July 12, 1922
Posted by Linda C Driscoll at Ancestry: California Los Angeles

7. Obituary of Adam Kline McQuilling
Pasadena (Cailfornia) Star News, July 3, 1940
Posted by Linda C Driscoll at Ancestry: California Los Angeles

8. Mercer County, Illinois Cemetery Records
William Dennison Chapter, NSDAR, Aledo, Illinois, 8 volumes
available on LDS Microfilm 0848589 for Volume I and 0848590 for volumes II through VIII
indexed online at US GenWeb, Illinois, Mercer, thank you Nadine Holder

9. Social Security Death Index

10. California Death Records
an Ancestry.com database
These records:
NameSexBirth DateDeath DateBirth PlaceDeath PlaceMother's MaidenFather's Surname
McQuilling
Adam Kline
M29 Nov
1840
3 Jul
1940
IllinoisLos
Angeles
FloryMcQuilling
McQuilling
Carol Felicia
F22 Jul
1910
6 Apr
1984
New
Mexico
Santa
Clara
GroutShriver
McQuilling
Donald William
M21 Jan
1909
16 May
1995
CaliforniaSanta
Cruz
Prindle 
McQuilling
Inez M
F19 Nov
1871
7 Feb
1969
IllinoisAlamedaSedwick 
McQuilling
Mary A
F7 Nov
1879
8 Jul
1970
MissouriAlameda  
McQuilling
Robert E
M22 Sep
1907
15 Jul
1967
CaliforniaKernPrindle 

11. Personal knowledge of family members/researchers
a. Effie "Pat" (Sedwick) Longerbone, daughter of George Washington Sedwick
b. Lyle D Sedwick, descendant of Dan W Sedwick
c. Kathleen McQuilling, descendant of William Sedwick Mcquilling
d. Evelyn Anderson, quoting The McLaughlin Family" compiled by Steven McLaughlin
e. Jan Campbell, daughter of Effie "Pat" (Sedwick) Longerbone
f. Catherine Kimmell, descendant of Daniel Greene and Amy Dewitt

12. Family Bible of Washington Sedwick, transcribed by Lyle D Sedwick.
Bible was in posession of Roberta Sedgwick, Edinburg, Lawrence, Pennsylvania.
She has since passed away; current location of Bible unknown.

13. Peter Kiner Sedwick letter written Oct 25, 1891, apparently to William H Sedgwick (1864-1934), son of William Hadden Sedgwick (1933 - 1895) of Granville, Licking Ohio, of the Joshua Sedwick/Joshan Manning family. Sent by Nola Miles Rogers, researcher of that family.

14. Letter, May 8, 1998 from Rev Jeff Bobin, Conference Facilities Manager, United Methodist Center, Cranberry Twp, Pensylvania, to Lyle D Sedwick descendant of Washington P Sedwick:
"Washington Sedwick donated a parcel of property to the Nazareth Methodist Church and it was deeded to the church after his death by court order. The property is located at the corner of Church and Ash Roads in Springfield Township, Pennsylvania. ... The one-acre lot contains a small church building constructed about 1840 and approximately 3/4 of the lot is a cemetery."
"I have not found any indication that Washington was a Methodist pastor..."

15. Obituary of George Washington Sedwick
copy sent by Lyle D Sedwick

16. Obituary of Caroline (Reeble) Sedwick
copy sent by Lyle D Sedwick

17. California Birth Index, 1905-10
an Ancestry.com database

18. Obituary of Willis Daniel Sedgwick
said to be from a Lee County, Iowa, newspaper
scan sent by Catherine Kimmell, related to his wife Betsy Green

Questions? Have more data? genealogy@sedgwick.org