1.  Marriage Record:

2.  1850 Census Every-Name-Index/Images (online at Ancestry.com, Image #28 of 32):  Perry Twp., Union [now Snyder] Co., PA, Roll M432_831, p. 112B, 186/186, enumerated 20 Nov 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

Ames Shafer	27	M		Black Smith	300	Penna
Caroline Shaffer	26	F				"
Levi Shafer	3	M				"

3.  1860 Census Every-Name-Index/Images (online at Ancestry.com, Image #7 of 27):  Mount Pleasant Mills P.O., Perry Twp., Snyder Co., PA, Roll M653_1182, p. 544, PN 160, enumerated 10 Jul 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):

1158	1203	Amos Shaffer	39	M		Farmer	1600	300	Pennsylvania
		Caroline  "	35	F					"
		Levi      "	12	M					"
	1204	Jacob Shaffer	73	M		Shoemaker			"
		Christian  "	67	F					"
		Emaline Goodling	7	F					"

Jacob & Christian are Amos's parents.

4.  1870 Census Every-Name-Index/Images (online at Ancestry.com, Image #14 of 26):  Mt. Pleasant Mills, Perry Twp., Snyder Co., PA, Roll M593_1451, p. 146B, PN 14, 107/107, enumerated 1 Aug 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):

Shaffer Amos	49	M	W	Farmer	2000	500	Pa
"    Caroline	46	F	W	Keeping house			Pa
"    Levi	23	M	W	Laborer			Pa
"    Barbara	9	F	W				Pa
"    John	5	M	W				Pa
"    Catharine	79	F	W				Pa
"    Emaline	18	F	W				Pa

Did the enumerator err?  Or do we have here Christiana's other given name?  They appear to have adopted Emaline GOODLING.

5.  Email from Bill Rudy.