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Arthur Carsten MATTHIESEN
Anna California ROSE
Ida Esther MARTILLA
Husband:  Arthur Carsten "Art" MATTHIESEN
Birth:  10 Dec 1895, Oakland, Alameda Co., CA
Death (coronary artery disease):  15 Jun 1967, Boulder Creek, Santa Cruz Co., CA
Disposition:  IOOF Crematory
Y-DNA Haplogroup:  R-1b1b-2a1a-4a, a.k.a., R-L47
Occupation:  private investigator, house painter 
Military Service:  California National Guard:  1916, Punitive Expedition against Mexico (injured Nogales, AZ)
Father:  Andreas MATHIESEN
Mother:  Christine Mommine Jessine SØRENSEN
Marriage-1:  23 Jan 1918, Oakland, Alameda Co., CA; divorced 1920s
Wife-1:  Anna California "Ann" ROSE
Birth:  9 Sep 1899, Sutter Creek, Amador Co., CA
Death (coronary artery disease):  11 Feb 1994, City & County of San Francisco, CA
Disposition:  ashes interred Alta Mesa Memorial Park, Palo Alto, Santa Clara Co., CA
mtDNA Haplogroup:  H11 ("Clan Helena")
Occupation:  bookkeeper, accountant 
Religion:  atheist
Father:  William Lee ROSE (1863-1836)
Mother:  Maude Irene THOMPSON (1877-1975)
Marriage-2:  aft. 1930
Wife-2:  Ida Esther MARTILLA
Birth:  5 Mar 1906, Fredrick?, Brown Co., SD
Death:  29 Apr 1967, Santa Cruz, Santa Cruz Co., CA
Occupation:  homemaker 
Father:  Henrick Nikolai MARTILLA (1875-1921)
Mother:  Anna Eldiida KESTI (1878-1961)
Children with Anna California ROSE — born in Oakland, Alameda Co., CA:
1.  Arthur Robert "Bob / Bobbie / Mattie" MATTHIESEN, b. 11 Nov 1918
2.  (Daughter) MATTHIESEN
Child with Ida Esther MARTILLA:
3.  (Son) MATTHIESEN
Keywords for search engines:  genealogy; USA, United States, California, South Dakota

Sources:

1.  First-hand knowledge (Ann was my paternal grandmother), and interviews of subjects' children. 

2.  Baptismal Certificate of Arthur Carsten MATTHIESEN. 

3a.  1920 Census Every-Name-Index/Images (online at Ancestry.com, Image #6 of 36):  2122 Seventh Ave., Oakland City, Brooklyn Twp. (Pct. 124), Alameda Co., CA, Roll T625_89, p. 237B, SN 3B, SD 5, ED 82, enumerated 3 Jan 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 13 14 15 17 18 19 20 21 22 23 24 25 26 27 28
* 2122 59 64 Madison Andrew Head O M M W 52 M 1885 Na 1890 Y Y Ger Ger Den Dan Den Dan Y Tailor Tailor Shop Em
      _______ Christina M Wife     F W 52 M 1889 Na 1890 Y Y Den Dan Den Dan Den Dan Y None    
      _______ Arthur C Son     M W 24 M       Y Y CA   Ger Ger Den Dan Y Merchant Mens Furnishings Store Em
*Seventh Ave
3b.  1920 Census Every-Name-Index/Images (online at Ancestry.com; Image #19 of 30):  311 S. American Street, Apt. 9, Stockton City (Ward 3, Pct 5), O'Neil and Stockton Twp., San Joaquin Co., CA, p. 132A, SN 10A, SD 3, ED 171, enumerated 10 Jan 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 4 5 6 7 9 10 11 12 16 17 18 19 21 23 25 26 27 28
* 3119 220 Rose William L Head R M W 56 M   Y Y CA AL TN Y watchman factory W
    ____ Maude Wife   F W 42 M   Y Y CA MO CA Y none    
    Matthiesen Anna C Dau   F W 20 M N Y Y CA CA CA Y none    
*South America Street
Art and Ann were obviously separated at this point, but where is their son, Bobbie?  Bobbie was born in 1918, and on January 10th, Ann would have been almost eight months pregnant with her second (and final) child with Art.  Note that Y-DNA testing has proven Ann's son to be a full 67/67 match with his younger half-brother (i.e., Art's son with his second wife, Ida), so there is no question with regard to Bobbie being Art's son.  So, is Bobbie's absence here simply enumerator error?
4a.  1930 Census Every-Name-Index/Images (online at Ancestry.com, Image #24 of 38):  7th Ave., Oakland City (Block No. 1867), Brookly [Brooklyn] Twp., Alameda Co., CA, Roll 105, p. 12A, SN 12A, ED 1-1-1, SD 8, enumerated 8 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 21 22 23 24 25 26 27 28
* 122 188 209 Mathhiesen Christine Head O 8500 R N F W 63 Wd 22 N Y DK DK DK Danish 1889 Na Y None      
      __________ Arthur Son         M W 33 D 21 Y Y CA Ger DK       Y Detective Agencey O Y
*7th Ave
4b.  1930 Census Every-Name-Index/Images (online at Ancestry.com):  can't find Ann (or her mother or her children), at least.  My Dad tells me they moved from San Francisco to Alameda when he was in the Seventh Grade (age 11), so it's conceivable they missed the census during the move.

5.  Death Certificates of Arthur Carsten MATTHIESEN and Anna California (ROSE) MATTHIESEN.

6.  California Death Index (online at RootsWeb.com):
Last
Name
First
Name
Middle Birth
Date
Mother
Maiden
Father
Last
Sex Birth
Place
Death Place
(County)
Death
Date
SSN Age
MATTHIESEN Arthur C 12/10/1895     M CA Santa Cruz 06/15/1967 554-07-4350 71
MATTHIESEN Ann Rose 09/09/1899 THOMPSON ROSE F CA San Francisco 02/11/1994 567-01-7030 94
MATTHIESEN Ida E 03/05/1906 MARTILLA   F SD Santa Cruz 04/20/1967   61
Ann's middle name was California; ROSE was her maiden name.  MARTILLA was Ida's maiden name, not her mother's maiden name; that is, MARTILLA was her father's surname, not her mother's.
7.  Obituary from the Amador Ledger Dispatch, Jackson, CA, Feb 1994:
Anna C. Rose Matthiesen
Born in Sutter Creek in 1899
  Anna California Rose Matthiesen, who was born in Sutter Creek, died Feb. 11 in a San Francisco convalescent hospital at the age of 94.
  Her daughter, Betty Cogliati of San Francisco, said Mrs. Matthiesen was born on Sept. 9, 1899, which also was Admission Day, and that led to her middle name of California.  When she was young she participated in many Sept. 9 parades in Sutter Creek, her daughter said.
  Mrs. Matthiesen was the daughter of Judge William Lee Rose and Maude Irene Thompson Rose and was descended from the pioneer families of McCray, Thompson and Rose, her daughter said.
  In addition to her daughter, she is survived by a son, Robert 'Bob' Matthiesen; three grandchildren and two great-grandchildren.
  Private memorial services will be held in Palo Alto.

8.  From the Death Notices of the San Francisco Examiner/Chronicle, San Francisco, CA, 13 Feb 1994:
MATTHIESEN, Anna California Rose:
  In this city at Mission Villa Convalescent Hospital on February 11, 1994.  Born on September 9, 1899 in Sutter Creek, Amador County, CA.  Beloved mother of Arthur Robert "Bob" Matthiesen and Betty Ann Cogliati; adored grandmother of Diana Matthiesen and Steven and Kevin Cogliati; grandmother-in-law of Ann and Jane Cogliati; Granny Ann to her two great-grandchildren, Eric and Danielle Cogliati.  A descendant of the pioneer families of McCray, Thompson and Rose.
  Private Memorial Services will be held at a later date in Palo Alto.
  NEPTUNE SOCIETY OF SAN FRANCISCO

9.  From the newspaper column of Herb Caen, San Francisco Chronicle, San Francisco, CA, 18 Feb 1994:
My dear friend, the beautifully named Anna California Rose (married name Matthiesen), died in her sleep last wk. at 94.  There was an innocent time in the Golden State when many a baby was named California.

10.  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):
Roll | No: 1531211 | 7
1 Name in full | Age in yrs: Arthur Caston Matthiesen | 21
2 Home Address: 2122 7 Av Oakland Calif 
3 Date of Birth: Dec 10th 1895
4 Are you (1) a natural born citizen… Natural born
5 Where were you born: Oakland Calif USA
6 If not a citizen, of what country… -
7 What is your present trade, occupation… clerk
8 By whom employed: A Matthiesen (father)
Where employed: 1214 Franklin St. Oakland
9 Have you [dependents]?: [too faded to read]
10 Married or Single | Race: Single | Caucasian
11 What military service have you had? National Guard
2 mos Calif
12 Do you claim exemption from draft? Yes Weak right knee
Signature: Arthur C Matthiesen
1 Height (tall, medium, short): Medium
Build (slender, medium, stout): Medium
2 Color of Eyes | Color of Hair | Bald? blue | sandy | no
3 Physically Disabled: Yes. Weak right knee
[unreadable...] Nogales Ariz 7/24/16
Date of Registration: 6 / [?] / 17
Draft Board: Alameda Calif
Arthur's signature was in a clean, round hand, but the rest of the form was filled out in a miserable scribble.

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Memorial stone for King Erik I (c1060-1103), a.k.a., 'Erik the Good' or Erik Ejegod; Borgvold, Viborg Amt, DK (photo from WikimediaCommons by User:Calvin, 2007). Viking burial ground (700-1150 CE), Lindholm Høje, Aalborg Amt, DK (photo from WikimediaCommons by User:Bunnyfrosch, 2007).

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