1.  Marriage Record:

2.  Census Index:  U.S. Selected Counties, 1840 (Broderbund CD-316):  not found.  George appears not to have been married by 1840.  The only STROUP/&c. in Kensington is an Elizabeth, who may be George's widowed mother.

3.  Census Microfilm Records:  Pennsylvania, 1850 (Broderbund CD-305, Disk 8):  5th Ward Kensington, Philadelphia Co., PA, p. 391B,  enumerated 24 Aug 1850 (extracted by Diana Gale Matthiesen):

1288	1401	George Stroup	37	M	Hatter		Pa
		Pheobe    "	27	F			NJ
		Sylvester "	5	F (sic)			do
	1402	Samuel Vandergreft	40	M	Hatter		Pa
		Rachel      "	41	F			NJ
		Ellen       "	18	F			do

Samuel is indexed as "Vandergrift," but there's no dot over the "e."

4.  1860 Census Images (online at Ancestry.com; Image #9 of 516):  Kensington P.O., N E Division 18th Ward [of Philadelphia], Philadelphia Co., PA, p. 9, PN 9, 54/60, enumerated 4 Jun 1860 (extracted by Diana Gale Matthiesen):

George Stroup	40	m		Hatter			Pa
Phebe     "	39	f					NJ
Sylvester "	15	m					Pa
Amanda    "	9	f					do
Clara     "	6	f					do
Lavinia   "	2	f					do