1.  Marriage Record:

2.  1840

3.  1850

4.  1860 Census Every-Name-Index/Images (online at Ancestry.com, Image #5 of 12):  Salt Lick P.O., Karthaus Twp., Clearfield Co., PA, Roll M653_1096, p. 1047, PN 5, 29/27, enumerated 5 Jun 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):

Isaac Gaines	39	M	M	Farmer	5000	670	Penna
Isabella  do	32	F					"
David     "	19	M	M				"
Mary      "	17	F	M				"
Henry     "	15	M	M				"
Alexander "	14	M	M				"
Solomon Stroup	23	M		Farm Hand			"

5.  1870 Census Every-Name-Index/Images (online at Ancestry.com, Image #27 of 32):  Woodland P.O., Bradford Twp., Clearfield Co., PA, Roll M593_1327, p. 55A, PN 25, 177/175, enumerated 10 Aug 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):

Gains Isaac	54	M	M	Farmer	37,000	2,000	Penna
_____ Isabella	41	F	W	Keeping House			"
_____ Henry	24	M	M	Farm Laborer			"
_____ James	11	M	M				"
Glase George	19	M	W	Laborer			"
Gaines Alx	22	M	M	Farm "			"
Stroup Sarah	19	F	W	Domestic Servant			"

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