1.  Marriage Record:

2.  1850 Census Index/Images (online at Ancestry.com; Image #11 of 38):  Amity Twp., Berks Co., PA, p. 434A, 77/84, enumerated 14 Aug 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

Jonas Rhoads	32	M		Farmer		Berks Co
Rachael  do	31	F				do
Anna     do	8	F				do
Albert   do	6	M				do
Delila   do	10/12	F				do
Chas Stroup	20	M		Laborer		do
Abram Rhoads	27	M				do
Sarah Faber	40	F				do

Abraham RHOADS is Jonas's brother, who later married Charles STROUP's sister, Harriet STROUP, who is listed four household's away, living with Ann HUNTER (æ 73, b. Berks Co.), who is almost certainly Rachael's mother. 

3.  Anon.  1911.  Genealogical & Biographical Annals of Northumberland County.  J.L. Floyd & Co., Chicago. Biographical sketch of Walton F. RHODES, which mentions our subject.