1.  Marriage Record: 

2.  1850 Census Index/Images (online at Ancestry.com; Image #5 of 15):  Cold Spring, Cattaraugus Co., NY, pp. 3A-3B, 33/37, enumerated 16 Jul 1850 (extracted by Diana Gale Matthiesen).  For the full record, see David WRIGHT's family group sheet. 

David Wright	31	M		Farmer		New York
[David's wife and children]
[next page]
William Brown	18	M		Lumberman		New York

3.  1860 Census Images (online at Ancestry.com; Image #1-2 of 20):  Randolph & East Randolph P.O., Cold Spring, Cattaraugus Co., NY, pp. 657-658, PN 1-2, 138/137, enumerated 25 Jun 1860 (extracted by Diana Gale Matthiesen):

William M Brown	28	M		Lumberman	1200	2500	New York
Emeline Brown	27	F		Housewife			Do
Frank Brown	3	M					Do
Grace Brown	1	F					Do
[next page]
Hamilton Robb	23	M		Mill Laborer			Penn
Charles Cooper	19	M		Do			New York
John Mattoon	20	M		Do			Do
William Brown	69	M		Farmer			Connecticutt
Thaddeus S Van Scoter	16	M		Mill Laborer			New York

The elder William BROWN is our subject's father.  They are living next door to William's mother, Eliza (__?__) BROWN.

4.  1870 Census Images (online at Ancestry.com; Image #4 of 56):  East Randolph P.O., Town of Randolph, Cattaraugus Co., NY, p. 491B, PN 4, 37/34, enumerated 20 Jul 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):

Brown Wm M	39	M	W	Farmer	15,000	15,000	NY
_____ Emeline M	38	F	W	Keeping House			"
_____ Frank A	13	M	W	at Home			"
_____ Mi????ia? M?	5	F	W	at Home			"
_____ Louise	1	F	W	at Home			"

5.  1880 United States Census and National Index (LDS Family History Resource File: CD-ROM Library):

Census Place: Randolph, Cattaraugus, New York
Source: FHL Film 1254812; NARA Film T9-0812; Pg 79D
	Relation	Sex	Marr	Race	Age	Birthplace	Occupation	Fa	Mo
William M. BROWN	Self	M	M	W	49	NY	Oil Operator-Farmer	CT	CT

William's mother was born in Canada.

6.  William Adams, ed. 1893. Historical Gazeteer & Biographical Memorial of Cattaraugus Co., with Map and Illustrations.  Lyman, Horton, & Co., Syracuse, NY.  1164 pp.  (facsimile reprint in 1995 by Higginson Books, Salem, MA).  On p. 1042:

Town of Randolph ABSTRACT of Biographical Sketch: 1. William M. BROWN, Sr. - b. Connecticut; settler of both South Valley and Cold Spring; d. 1863, Cold Spring     +?     1. William M. BROWN, Jr. - b. 1830, Portland, Chautauqua Co., NY; 1870, Sheriff of Cattaraugus Co.; Supervisor of Cold Spring for 6 years         +Emeline M. WOODWORTH, d/o Madison WOODWORTH of Cold Spring; m. 1855; had four children     2. Norman BROWN

7.  Email from Janet Hoffman (10/05).