1.  Marriage Record:

2.  1860 Census Every-Name-Index/Images (online at Ancestry.com, Image #10 of 10):  Clarion P.O., Millcreek Twp., Clarion Co., PA, Roll M653_1095, p. 340, PN 10, 62/66, enumerated 31 Aug 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):¤•

Henry Beer	38	M		Lumberman	900	200	Penna
Elisabeth "	26	F					"
William   "	7	M					"
Margaret  "	5	F					"
John      "	3	M					"
Alvaretta "	1	F					"

Listed between Elizabeth's parents, Philip & Mary Ann (DEAN) STROUP, and her brother, Robert STROUP. 

3.  1870

4.  1880

5.  1890 Census:  the 1890 Census Population Schedules were destroyed.

6.  1900

7.  Fisher Methodist Cemetery, Mill Creek Township (online at the Clarion County PAGenWeb site; transcribed by Nate Zipfel):

Last Name	First Name	Middle Name	Other Name	Date of Birth	Date of Death	Age at Death	Notes
Beer	Henry			July 20, 1821	January 8, 1909		GAR marker
Beer	Mary	E	Stroup	1831	1877
Beer	William L			1853	1936
Beer	John			1858	1924
Beer	Alvaretta	Jane			April 22, 1888	28y 8m 8d	footstone present

These are all the BEER tombstones listed.

8.  Birthdate calculated using Ben Buckner's Birthdate Calculator.

Name	Deathdate	Age at Death	Result
Alvaretta Jane BEER	22 Apr 1888	8d 8m 28y	14 Aug 1859
(Calculated birthdates should always be prefaced with "ca." — you can't be certain the person who calculated their age did it correctly.)

9.  A. J. Davis, ed.  1887.  History of Clarion County, Pennsylvania.  D. Mason & Co., Syracuse, NY (online at www.rootsweb.com/%7Epacchs/):

Beer, Henry, Fisher p.o., Mill Creek, was born in Armstrong county, on July 20, 1821. His father, Jacob Beer, was a carpenter by trade, and when Blacks & Shippen's Furnace was in blast, he worked for them, doing carpenter work for three years. His wife's maiden name was Elizabeth Maccafoose, who was of German descent, her parents being both natives of Germany.  Jacob and Elizabeth had a family of twelve children; two boys and one girl are dead -- William, George, and Susan.  Those children now living are Jacob, Elizabeth, John, Henry, Martha, Christina, Samuel, Mary Ann, and Eve. Henry Beer was married in 1851, to Elizabeth Stroup.  Their first child, Mary Ann, died while young.  The rest of their children, four in number, are all living -- William L., Anna M., John, and Alvaretta J.  Mr. Beer has been engaged in farming and lumbering.  He has forty acres of farm land on which he now resides, much broken down in health.  He enlisted on August 1, 1861, as a private in the War of the Rebellion; was through the seven days' fight and other engagements, and was honorably discharged on account of disability, in October, 1862, for which he now receives a pension.

10.  Messages posted to the Clarion County, Pennsylvania, Forum (online at GenForum.com).