— born in CA, presumably in Sacramento, Sacramento Co., CA:
2.  Edwin H. "Ed" PRENTICE, b. 1854/5
3.  Charles W. and/or D. PRENTICE, b. 1856/7
4.  George W. PRENTICE, b. 1858/9 — did George die young, or was he adopted?
5.  Clara Elizabeth PRENTICE, b. 1860 — by 1870, adopted by Clara's sister, Elizabeth (STODDARD) HUNTINGTON

1.  LDS.  Family Search: Internet Genealogy Service:  IGI - International Genealogical Index (online at FamilySearch.org).

Edwin D. PRENTICE Birth: 17 Dec 1821, Woodbury, Litchfield, Connecticut Death: 1861 Father: Rev. Charles PRENTICE (1778-1863); Mother: Clarinda PARMALEE Marriage: 23 Jun 1851; Spouse: Clara STODDARD

2.  1860 Census Index/Images (online at Genealogy.com; Image #70 of 118):  City of Sacramento (Ward 4), Sacramento Co., CA, Roll 63 (Book 1), p. 565, PN 279, 2331/2260, enumerated 10 Aug 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):

E D Prentiss	32	M		Mcht		2500	Conn
Clara   "	30	F					"
Mary A  "	8	F					"
Ed H    "	5	M					Cal
Chas W  "	3	M					"
Geo W   "	1	M					"

3.  1870 Census Index/Images (online at Genealogy.com; Image #67 of 98 — indexed as "Thomas Prentice" in what has to be a data entry mixup with the person two lines above her):  Sacramento P.O., Sacramento (Ward 2), Sacramento Co., CA, Roll 77 (Book 1), p. 239A, PN 67, 579/567, enumerated 12 Aug 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):

Prentice Clara	40	F	W	Keeping house		1600	Conn
________ Mary A	18	F	W	None			"
________ Edwin H	15	M	W	Attending School			Cal
________ Charles D	13	M	W	"			"
Scuppan John	30	M	W	Clerk in R.R. office	1000	200	NY
Hoffman William	30	M	W	Agt. for sewing Mach.		800	Penn
Jackson John	24	M	W	Printer		100	Maine
Hickley Robert	20	M	W	"			Cal
Higgold Arnold	31	M	W	Saloon keeper		300	Prussia
Jameson William	14	M	W	Attending School			Cal
_______ Mary	10	F	W	"			"
Elwagner Herman	28	M	W	Jewaller		200	Bavaria
Wilder Eda	30	F	W	Music teacher		3000	NY
Gurst Catharine	20	F	W	Dress Maker			Ohio

4a.  LDS.  Family Search: Census Records: 1880 United States (online at FamilySearch.org):

Census Place: 2nd Ward, Sacramento, Sacramento, California
Source: FHL Film #1254071; NARA Film #T9-0071; Pg 54D
	Relation	Sex	Marr	Race	Age	Birthplace	Occupation	Fa	Mo
Richard A. MAYER	Self	M	M	W	49	MA	Painter	MA	MA
Jane H. MAYER	Wife	F	M	W	45	NH	Keeping House	ME	NH
Sarah J. MAYER	Dau	F	S	W	26	MA	At Home	MA	NH
Minnie A. MAYER	Dau	F	S	W	23	MA	At Home	MA	NH
Clara PRENTICE	Other	F	S	W	50	NY	Keeping House	CT	CT
Charles PRENTICE	Other	M	S	W	23	CA	Carpenter	CT	NY
Corlis EMMONS	Niece	F	S	W	23	WV	Clerk In Store	CT	CT
Elizabeth BIRD	Other	F	S	W	52	NY	House Keeper	NY	NY
Catherine JONES	Other	F	S	W	28	IRE	Servant	IRE	IRE

In addition to the gross error of making Corlis female and a niece (see next source), these two families were probably living in a duplex and appear to have no relationship to one another (again, see next source).  By combining them into one family, when there were clearly two, it makes it appear that Corlis is the "niece" of Richard MAYER, which he is not.  I guess it's a lesson that the LDS extraction can only be used as an index — of course, for that purpose, it is an incredibly useful tool.

4b.  1880 Census Images (online at Ancestry.com; Image #8 of 39):  310 M Street, Sacramento City (Ward 2), Sacramento Co., CA, p. 54D, PN 8, SD 2, ED 80, enumerated 4 Jun 1880, official enumeration date 1 Jun 1880 (extracted by Diana Gale Matthiesen):

1880:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).

1

2

3

4

5

6

8

9

10

13

24

25

26

*

310

61

63

Mayer Richard G

W

M

49

/

Painter

MA

MA

MA

_____ Jane H

W

F

45

Wife

/

Keeping House

NH

ME

NH

_____ Sarah J

W

F

26

Dau

/

at home

MA

MA

NH

_____ Minnie A

W

F

23

Dau

/

at home

MA

MA

NH

64

Prentice Clara

W

F

50

Keeping house

NY

CT

CT

________ Charles

W

M

23

Son

Carpenter

CA

CT

NY

Emmons Corlis

W

M

23

Nephew

Clerk in Store

WV

CT

CT

Bird Elizabeth

W

F

52

House Keeper

House Keeper

NY

NY

NY

Jones Catharine

W

F

28

Servant

Servant

Ire

Ire

Ire

*M Street

These are two different families; Corlis EMMONS is Clara's nephew, not Richard's.

4c.  LDS.  Family Search: Census Records: 1880 United States (online at FamilySearch.org):

Census Place: 8th Ward, San Francisco, San Francisco, California
Source: FHL Film #1254075; NARA Film #T9-0075; Pg 166D
	Relation	Sex	Marr	Race	Age	Birthplace	Occupation	Fa	Mo
Edwin H. PRENTICE	Other	M	S	W	26	CA	Clerk In R. R. Office	CT	CT

One of many residents in a boarding house.

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