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

Hiram CRITTENDEN Birth: 05 Jul 1814, Tyringham, Berkshire, Massachusetts Death: 18 Feb 1883 Father: Hiram CRITTENDEN; Mother: Abigail BALDWIN Marriage: 30 Sep 1849, Great Barrington, Berkshire, Massachusetts Spouse: Lydia SHERWOOD Source: [patron submission]

2.  Timothy Hopkins.  1932.  John Hopkins of Cambridge, Massachusetts, 1634, and Some of His Descendants.  Stanford Univ. Press, Stanford, CA.  On p. 454:

...Mary Kellogg Crittenden, b. 6 June 1863, daughter of Hiram Crittenden and Lydia Sherwood, sister of Mrs. Mark Hopkins.

3a.  1850 Census Index/Images (online at Ancestry.com; Image #276 of 286):  Planters House Hotel, City of St. Louis (Ward 3), St. Louis Co., MO, p. 418B, Ln. 12, 1548/1680, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

H. Crittenden

30

M

None

Connecticut

One of over 300 residents in what was apparently a huge hotel.  The majority of residents were single males, nearly all of whom had "None" written in the Occupation column.  (Hiram's widowed mother, Abigail (BALDWIN) CRITTENDEN, æ 60, b. MA, is in the 1850 census of Tyringham, Berkshire Co., MA.)

3b.  1850 Census Index/Images (online at Ancestry.com; Image #162 of 545):  New York City (Ward 15), New York Co., NY, p. 81A, 683/1112, enumerated 24 Sep 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

William Sherwood	60	M		Merchant		New York
Sarah	52	F				"
Harriet	29	F				"
L S Crittenden	20	M				"
Moses Hopkins	26	M				"
Martha Gilber	12	F				"
Mary Keley	35	F				Ireland
Ellen	23	F				"
Bridget	20	F				"

William SHERWOOD is Lydia's father; Moses HOPKINS is Lydia's brother-in-law.

4.  1860 Census Images (online at Ancestry.com; Image #161 of 261):  St. Louis P.O., St. Louis City (Ward 3), St. Louis Co., MO, p. 161, PN 161, 763/1309, enumerated 29 Jun 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):

Hiram Crittenden	40	M		Merchant	150,000	30,000	Mass
Lydia     "	27	F					Do
Frank     "	4	M					Mo
Anna      "	9/12	F					Do
Josephine Bittner	16	F		Servant			Mo
Jane Crozier	30	F		Do			Ireland

Lydia is fibbing about her age, already.

5.  1870

.  1880 Census Images (online at Ancestry.com; Image #12 of 18):  3 New Montgomery Street, San Francisco, San Francisco Co., CA, p. 12A, PN 12, Line 20, SD 1, ED 111, enumerated 8 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).
		3	4	5	6	8	11	13	24	25	26
*	3	Crittenden Hiram	W	M	66	Lodger	/	Retired Merchant	MA	MA	MA
*New Montgomery Street

Hiram should be 60, not 66.  A tick in Column 11 indicates widowed or divorced.  One of 21 residents in what was apparently an apartment building.

.  LDS.  Family Search: Internet Genealogy Service:  AF - Ancestral File (online at FamilySearch.org).