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

William H. SEIDL Birth: Wisconsin Father: Chas. SEIDL; Mother: Lavina ALDRIDGE Marriage: 28 Jun 1907, Menominee, Menominee, Michigan Spouse: Irene STREUB Father: Bernard STREUB; Mother: Muriel O'BRIEN Source: "Extracted marriage record for locality listed in the record."

This is surely our couple, but why the discrepancies?  Ten-to-one William got the license by himself.

2.  1870 Census Every-Name-Index/Images (online at Ancestry.com):  Levina ALDRICH (æ 13, b. WI) is living in the Town[ship] of Preble, Brown Co., WI (p. 379A), with her parents, Chauncey ALDRICH (æ 45, b. NY) & Amanda (æ 47, b. NY).

3.  1880 Census Every-Name-Index/Images (online at Ancestry.com):  Lovine ALDRICH (æ 21, b. WI) is living in Preble, Brown Co., WI (p.), with her parents, Jensey ALDRICH (æ 55, b. NY/MA/MA) & Amanda (æ 57, b. NY/NY/NY).

4.  1900 Census Every-Name-Index/Images (online at Ancestry.com):  William H. SEIDEL (æ 18, b. Sept 1881, WI/Ger/WI) and his brother, Edwin A. SEIDEL (æ 17, b. Sep 1882, WI/Ger/WI), are living in Preble Town[ship], Brown Co., WI (p. 222A), with their aunt (Lovina's married sister, Delight) and between two uncles (Lovina's brothers, Madison and Porter).

5.  1910 Census Every-Name-Index/Images (online at Ancestry.com, Image #3 of 29):  75 West Second Street, Fond du Lac City (Ward 4), Fond du Lac Co., WI, Roll T624_1712 (Book 1), p. 97A, SN 2A, SD 5, ED 50, enumerated 16 Apr 1910, official enumeration date 15 Apr 1910 (extracted by Diana Gale Matthiesen):¤•

1910:  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	7	8	9	10	11	12	13	14	17	18	19	20	21	22	23	24	25	26	27	28	29
*	75	26	33	Seidel William H	Head	M	W	29	M1	3			Wisconsin	Ger-German	Wisconsin	Eng	Engineer	Locomotive	W	N	0	Y	Y		R	-	H	-
				______ Irene	Wife	F	W	27	M1	3	0	0	Wisconsin	Ger-German	Wisconsin	Eng	None					Y	Y
*West Second Street

6.  1920 Census Every-Name-Index/Images (online at Ancestry.com, Image #35 of 36 — indexed "Well Seidel"):  20 Howard Ave., Fond du Lac City (Ward 6), Fond du Lac Co., WI, Roll T625_1986 (Book 2), p. 91A, SN 18A, SD 5, ED 35, enumerated 18-20 Feb 1920, official enumeration date 1 Jan 1920 (extracted by Diana Gale Matthiesen):¤•

1920:  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	7	8	9	10	11	12	17	18	19	21	22	23	25	26	27	28
*	20	613	632	Seidel Will	Head	O	M	M	W	38	M	Y	Y	Wisconsin	Germany	German	Wisconsin	Y	Engineer	R R	W
				______ Irene	Wife			F	W	36	M	Y	Y	Wisconsin	New York	Canada	English	Y	None
*Howard Ave

7.  1930 Census Every-Name-Index/Images (online at Ancestry.com, Image #6 of 56):  22 Howard Avenue, City of Fond du Lac (Ward 6), Fond du Lac Co., WI, Roll 2572 (Book 2), p. 83B, SN 3B, ED 20-18, SD 8, enumerated 4 Apr 1930, official enumeration date 1 Apr 1930 (extracted by Diana Gale Matthiesen):¤•

1930:  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	7	8	9	10	11	12	13	14	15	16	17	18	19	20	24	25	26	27	28	30
*	22	82	86	Seidel W H	Head	O	5000	R	N	M	W	49	M	27	N	Y	Wisconsin	Germany	Wisconsin	Y	locomotive engineer	railroad	M	Y	N
				______ Irene	Wife					F	W	47	M	25	N	Y	Wisconsin	United States	Canada English	Y	none
*Howard Avenue

8  World War I Selective Service System Draft Registration Cards, 1917-18.  Microfilm Series M1509 (4277 rolls), National Archives and Records Administration, Washington, DC (card images and index online at Ancestry.com; all these card images are difficult to read, but this one was especially blurry and difficult):

Roll | Serial No. | Order No.:	1674637 | 215? | 218
Name:	William Henry Seidel
Permanent Home Address:	22 Howard Ave, Fond du Lac, Wis
Age in Years | Date of Birth:	36 | Sep 18 1882
Race:	White
Citizenship:	Native Born
Present Occupation:	Locomotive engineer
Employer's Name:	?? Line R R Co
Place of Employment or Business:	N ??? Wis
Name of Nearest Relative:	Irene Seidel
Address of Nearest Relative:	22 Howard Ave F D L
Signature:	William Henry Seidel
Height | Build:	Medium | Medium
Color of Eyes | Color of Hair:	Brown | Brown
Physically Disabled:	No
Date of Registration:	Sept 12 - 1918
Draft Board:	Fond du Lac, County of Fond du Lac, Wis

9.  Anon.  Monday, 25 Apr 1960.  "Today's Deaths." Appleton Post-Crescent (Appleton, WI), v. LIII, n. 58, p. A18 (online at Ancestry.com):

Mrs. William H. Seidel Funeral services were conducted Friday afternoon at Fond du Lac for Mrs. William H. Seidel, 76, who died after a heart attack at her home there Tuesday.  She was born Feb. 1, 1884, at Northport. Services were conducted at the Dugan Funeral home, Fond du Lac, by the Rev. Charles Damp, pastor of the First Presbyterian church.  Burial was in the Rienzi Memorial mausoleum, Fond du Lac. Survivors include three brothers, Enos Straub, Green Bay; John Straub, Superior, and Arthur Straub, Northport.

10.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com):  for ALDRICH line.