1.  Marriage Record:

2.  1850 Census Every-Name-Index/Images (online at Ancestry.com):  Levy CONSER is living in Logansville, Green Twp., Clinton Co., PA (p. 139A), with his first wife, Barbary [Barbara KLECKNER] (æ 33, b. PA), and children.

3.  1860 Census Every-Name-Index/Images (online at Ancestry.com):  Widower Levi CONSER (æ 40, b. PA) is living in Green Twp., Clinton Co., PA (p. 141A), with his children.  James THOMPSON (æ 33, b. PA) and his wife, Hannah (æ 26, b. PA), are living in Lamar Twp., Clinton Co., PA (p. 218), with their children, et al.

4.  1870 Census Every-Name-Index/Images (online at Ancestry.com):  Thomas CONSER (æ 7, b. PA) is living in Logansville Borough, Clinton Co., PA (p. 468A), with his parents, Levi CONSER (æ 50, b. PA) & Eve M. (æ 46, b. PA), plus siblings.  Jas. T. THOMPSON (æ 44, b. PA) and his wife, Anna M. (æ 38, b. PA), are living in Lamar Twp., Clinton Co., PA (p. 491A), with their children, et al.

5.  1880 Census Every-Name-Index/Images (online at Ancestry.com):  Thomas C. CONSER (æ 17, b. PA) is living in Logansville Borough, Clinton Co., PA (p. 590B), with his parents, Levi CONSER (æ 60, b. PA) & Eve M. (æ 50, b. PA), plus siblings.  Gabriella THOMPSON (æ 7, b. PA) is living in Lamar Twp., Clinton Co., PA (pp. 574B-575C), with her parents, Jas. T. THOMPSON (æ 54, b. PA) and Hannah M. (æ 46, b. PA), plus siblings.

6.  1890 Census:  the 1890 Census Population Schedules were destroyed.

7.  1900 Census Every-Name-Index/Images (online at Ancestry.com, Image #2 of 29):  39 South 4th Street, Sunbury Borough (Ward 2), Sunbury Twp., Northumberland Co., PA, Roll T623_1450, p. 145B, SN 1, SD 10, ED 159, enumerated 1 Jun 1900, official enumeration date 1 Jun 1900 (extracted by Diana Gale Matthiesen):

1900:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).
		1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	19	20	21	22	23	24	25	27
*	39	17	17	Conser Thomas C	Head	W	M	Nov 1863	36	M	8			PA	PA	PA	Physician	0		Y	Y	Y	R	H
				______ Gabriella T	Wife	W	F	Aug 1872	27	M	8	1	1	PA	PA	PA				Y	Y	Y
				______ Darothy G	Dau	W	F	Jan 1895	5	S				PA	PA	PA
				Weirick Beaulah	Servant	W	F	Jul 1886	13	S				PA	PA	PA	Winder - Silk Mill	8	0	Y	Y	Y
*South 4 Street

8.  1910 Census Every-Name-Index/Images (online at Ancestry.com, Image #29 of 39):  124 North Fourth Street, Sunbury Borough (Ward 2), Northumberland Co., PA, Roll T624_1384 (Book 2), p. 114A, SN 16A, SD 12, ED 112, enumerated 25 Apr 1910, official enumeration date 15 Apr 1910 (extracted by Diana Gale Matthiesen):

1910:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).
		1	2	3	4	5	6	7	8	12	13	14	17	18	19	20	23	24	25	26	28
*	124	261	288	Conser Thomas C	Head	M	W	46	D	PA	PA	PA	Eng	Doctor	General practice	OA	Y	Y		R	H
				______ Dorothy G	Dau	F	W	15	S	PA	PA	PA	Eng	None			Y	Y	N
*North Fourth Street

If Thomas is merely divorced, not widowed, it's odd that he would get custody of his child.  I don't find a Gabriella CONSER in the census, so if she is living, she presumably has remarried, though if so, she's not living in Northumberland County.

9.  Directory of Deceased American Physicians, 1804-1929 (online at Ancestry.com):

Name:	Thomas Curtin Conser
Birth Date:	1863
Death Date:	28 Oct 1911
Death Place:	Sunbury, PA
Type Practice:	Allopath
Licenses:	PA, 1891
Medical School:	Jefferson Medical College of Thomas Jefferson University, Philadelphia, 1888, (G)
JAMA Citation:	57:1852
Cause of Death:	cerebral hemorrhage

10.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com).  A file no longer online, but cached at Google has a Descendant Tree with this info:

Children of Hannah Betts [1792-1886] and Moses Thompson [1787-1847] are... v.  James T. Thompson was born 30 Apr 1826 in Mackeyville, Clinton Co, PA, and died 16 May 1906 in Salona, Lamar Twp, Centre Co, PA.  He married Hannah M.. She was born 19 Dec 1832, and died 9 Feb 1890 in Salona, Lamar Twp, Centre Co, PA.

11.  LDS.  Family Search: Internet Genealogy Service: IGI - International Genealogical Index (online at FamilySearch.org).

James THOMPSON Birth: About 1834, of Salona, Clinton, Pennsylvnia Marriage: 1858, Salona, Clinton, Pennsylvania Spouse: Hannah LIMON Birth: About 1839, of Salona, Clinton, Pennsylvania Source: patron submission

12.  Public Member Trees (online at Ancestry.com).

13.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com).