— born in Bethel Twp., Lebanon Co., PA:
2.  Martin O. LIGHT, b. 4 Feb 1814; d. 23 Jul 1885
3.  Henry LIGHT, b. ca. 1816; d.s.p. ca. 1816
4.  (Son) LIGHT, b. ca. 1818; d.s.p. ca. 1818
5.  Barbara LIGHT, b. 17 Feb 1820; d. 22 Mar 1896

— born in Bethel or Swatara Twp., Lebanon Co., PA:
6.  Catharine LIGHT, b. 1823; d. Dec 1879; m. Rev. Samuel BRANDT (1820-1885)
7.  (Dea.) Henry O. LIGHT, b. 27 Mar 1827; d. 3 Oct 1905

— born in Swatara Twp., Lebanon Co., OH:
8.  Christianna LIGHT, b. 16 Oct 1834; d. 23 Jan 1857

1.  Marriage Record:

2.  1820 Census Index/Images (online at Ancestry.com; Image #2 of 10; extracted by Diana Gale Matthiesen):

1820

PA

Lebanon Co.

Bethel Twp.

pp. 91-92

Ln. 51

Martin Light

400010-10100-0-100

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
4 males	9 or under	1810-1820	= Son (b. ca. 1818) = Henry (b. ca. 1816) = Martin O. (b. 1814) = John O. (b. 1812)
1 male	26-44	1775-1794	= Martin (b. 1788)
1 female	9 or under	1810-1820	= Barbara (b. 1820)
1 female	16-25	1794-1804	= Barbara (b. 1794)
1	person engaged in agriculture

Listed next to Jacob LIGHT (Ln. 52: 200010-10010-0-100).

3.  1830 Census Index/Images (online at Ancestry.com; Image #17 of 18; extracted by Diana Gale Matthiesen):

1830

PA

Lebanon Co.

Swatara Twp.

p. 10

Ln. 24

Martin Light

100 200 100 - 011 001 000

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	4 or under	1825-1830	= Henry O. (b. 1827)
2 males	15-19	1810-1815	= Martin O. (b. 1814) = John O. (b. 1812)
1 male	40-49	1780-1790	= Martin (b. 1788)
1 female	5-9	1820-1825	= Catharine (b. 1823)
1 female	10-14	1815-1820	= Barbara (b. 1820)
1 female	30-39	1790-1800	= Barbara (b. 1794)

4.  1840 Census Index/Images (online at Ancestry.com; Image #1-2 of 20; extracted by Diana Gale Matthiesen):

1840

PA

Lebanon Co.

Swatara Twp.

pp. 48B-49A

Ln. 12

Martin Light

001 000 010 - 010 200 100

0100000

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	10-14	1825-1830	= Henry O. (b. 1827)
1 male	50-59	1780-1790	= Martin (b. 1788)
1 female	5-9	1830-1835	= Christianna (b. 1834)
2 females	15-19	1820-1825	= Catharine (b. 1823) = Barbara (b. 1820)
1 female	40-49	1790-1800	= Barbara (b. 1794)
1	person employed in agriculture

Listed next to Henry LIGHT (Ln. 11: 200 010 - 100 110 | 0100000), who is 12 lines from Jacob LIGHT (Ln. 23: 010 001 - 101 100 | 0100000), who is two lines from Martin LIGHT (Ln. 25: 001 010 - 101 010 | 0100000).

5.  1850 Census Index/Images (online at Ancestry.com; Image #4 of 30):  Swatara Twp., Lebanon Co., PA, p. 18A/357, 28/28, enumerated 26 Aug 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

Martin Light	62	M		Gendleman	800	Penna
Christina	15	F				"
Nancy	6	F				"

Nancy must be a granddaughter.  Listed next to son, Henry LIGHT (æ 23, b. PA, wife Catharine).

6a.  Census Index:  U.S. Selected Counties, 1860 (Broderbund CD-318):  there are numerous LIGHTs indexed as being in Swatara Twp., but no Martin.  There are two Martin LIGHTs in Lebanon Co., one in Bethel Twp. and one in North Annville, but checking the next source, neither is our subject.

6b.  1860 Census Images (online at Ancestry.com):

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