I think I may have found her parents. I found an obituary for Elma on ancestry.com. I traced some of the people who came in from out of town for the funeral from Minnesota. Mrs W R Barnes and Mrs Clarence Hillig turned out to be Nettie Town and Alice Town. Tracing these folks, it looks like Elma may be a sister to these woman. If that's the case, then the parents of these women are: Truman P Town and his wife Matilda. Writing for a death certificate for any of these women might help prove the name of the parents. Truman was born in Vermont and so were his parents. I'll post what I've found since my last post. I'll duplicate the previous material also, since I may have added things in between those too.:

Elmwood Saint Joseph Cemetery, Mason City, Cerro Gordo Co, Iowa, USA:
Timmerman, Elma M(ae) (Loomer) b: 1886 d: 1941
Timmerman, John W in same cemetery; two birth dates: 1888 & 1898; d: 1971

1930 Mason City District 23, Cerro Gordo Co Iowa Census
10th St
709 22 26 Garlock, David A head m w 25 m 21 Iowa Iowa US Clerk Sales Dept Current Plan?
, Madlin wife-h f w 24 m 20 Iowa US Minnesota

1930 Mason City District 22, Cerro Gordo Iowa Census
1420 200 231 Timmerman, John head m w 42 m 31 Iowa Wisconsin wisconsin Tile setter Bunch & Tiles
, Elma wife f w 45 m 21 Minnesota New York Louisiana
Loomer, Douglas step son m w 20? s Iowa Iowa MN

1920 Mason District 34, Cerro Gordo Co Iowa Census
112 232 251 Timmerman, John W head m w 35 m Iowa Arkansas Arkansas contractor building
, Elma M wife f w 36 m Minnesota Vermont Louisiana
Loomer, Madlin daughter f w 14 s Iowa IL MN
Loomer, Douglas son m w 10 s Iowa IL MN

Ancestry.com. Iowa Cemetery Records [database on-line]. Provo, UT, USA: The Generations Network, Inc.,

2000. Original data: Works Project Administration. Graves Registration Project. Washington, D.C.: n.p., n.d.
Edward Loomer
Death date: 22 Jul 1910
Page: 70
Birth Date: 22 Aug 1877
Cemetery: Elmwood
Town: MC

1910 Mason Ward 3 District 34, Cerro Gordo Co, Iowa Census
14 ? 48 Loomer, Edward P head m w 32 m1 5 Iowa Wisconsin NY engineer locomotive
, Elma M wife f w 25 m1 5 2 2 Iowa NY Vermont
, Madlon V dau f w 4 s Iowa Iowa Iowa
, Duglas P son m w 8/12 s Iowa Iowa Iowa

In the 1900 census there is a family indexed as Tonn in District 101, Little Falls Ward 2, Morrison Co,

Minnesota, with a daughter Elma born October 1884.

1895 Iowa State Census:
Edward P Loomer
Age: 16
White
Birthplace: Blackhawk County Iowa
Residence: Mason City, Cerro Gordo

1900 Mason City District, Cerro Gordo Co Iowa Census
North Cedar Street
241 262 Loomer, Loring head w m May 1849 51 m 28 IL NY NY Day Laborer
, Clara wife w f Sept 1849 50 m 28 8 8 NY England NY
, Edward P son w m Aug 1877 22 s Iowa Illinois NY foundryman
, Clairmet? son w m Sept 1880 19 s Iowa Illinois NY cigarmaker
, Clara A dau w f Feb 1883 17 s Iowa Illinois NY
, Frank D son w m July 1885 14 s Iowa Illinois NY
, Gertrude dau w f Jan 1888 12 s Iowa Illinois NY
, Jennie dau w f Oct 1890 9 s Iowa Illinois NY

1905 Mason City Cerro Gordo Co Iowa State Census
Living at 307 N Washington St
C L Loomer
Inez Loomer
Fred C Loomer
Ed Loomer
Elma Loomer

In the same county in the 1905 State census:
Philo G Towne
Harriet E Towne
Clarence Towne
Rosas Towne
Peter Towne
Gora Towne
Marshal Towne
Merle Towne
Ensign D Towne
Anna Towne
Lloyd Towne

1900 Falls District 20, Cerro Gordo Co Iowa Census
126 126 Towne, Ensign D head w m Sep 1862 37 m 8 Minnesota NY NY far laborer
, Anna E wife w f Aug 1870 29 m 8 1 1 Iowa Germany Indiana
, Loyd E son w m Mar 1894 6 s Iowa Minnesota Iowa

1885 Iowa State Census Union, Worth County Iowa Census
69 75 Towne, Philo C Twnshp 98 Range 19 Section 33 NE 1/4 - NE 1/4 46 male married farmer NY
, Harriet E 45 NY
, Amanda J 20 Minn
, Charles S 18 Minn
, Peter W 17 Minn
, Viola L 15 Minn
, Clara E 12 Worth Co
, Clarence S 10 Worth Co
, Ralph P 9 Worth Co
, Willis E 7 Worth Co
, Annie M 6 Worth Co

On Ancestry.com: Mason City Globe Gazette (Mason City, Iowa) 23 April 1941:
FUNERAL RITES HELD AT CHURCH
Mrs. Elma Timmerman Services Held at Church of Christ
Funeral services for Mrs. Elma May Towne Timmerman, 54, who died at her home, 1420 Washington Avenue

Northwest, Monday morning following a lingering illness, were held at the Church of Christ Wednesday

afternoon with the Rev. David L Kratz, pastor of the church in charge, assisted by the Rev. Clare Hicks.
Mrs. Ivan Barnes and Mrs. S L. Haynes sang "Abide With Me" and "Until We meet Again". They were

accompanied by Miss Miriam Marston at the organ.
Mrs. Sam McKee, Mrs. Lloyd Atkinson and Mrs. Clare Hicks were in charge of flowers. Ushers were G.

L. Allison, Stanley Haynes and Ivan Barnes.
The Phelathea Sunday School class attended the services in a body.
Attending the services from out of the city were W.A. Timmerman, Mr. and Mrs. W. L. Timmerman,

Bonnie and Betty Timmerman, Mr. and Mrs. H O Timmerman, Norma and Marylynn Timmerman, Sheffield

and Ralph Holt, Minneapolis, Mrs. W R Barnes, Mr and Mrs Clarence Hillig and Mrs. Max True, Redwood

Falls, Minn.
Pallbearers were Lloyd Atkinson, Sam McKee, Al Halsor. Herman Letts, H.H. Timmerman and H.O.

Timmerman. Burial was at Elmwood cemetery.

On ancestry.com: From "The descendants of Stephen Loomer of New London, CT"
Page 416 "Madlon Violette Loomer, dau of Edwin P Loomer and Elma Towne Loomer, b Dec 28, 1905, m

July 24, 1926, David Garlock, who was b Nov 18 1904, live at Mason City, Iowa, 902 N Harrison Ave
Children: (adopted)
1. Darrell A, b July 18, 1937
2. Duane M, b Dec 1, 1938"
Same book, page 321:
"Edwin P Loomer, son of Loring and Clara (Cheney) Loomer, b Aug 25, 1877, m Elma Towne, who was b.

June 1886. He was in the Spanish-American War. Killed on R.R. at Rochester July 22, 1910, bur. Elmwood

Cem., Mason City, Later she m. John Timmerman.
Children:
1. Madlon Violette, b Dec 28, 1905, m July 24, 1926, David Garlock, who was b Nov 18, 1904. Live at Mason

City. Born at Mason City.
2. Douglas Preston, b. Aug 11, 1909, was aerial photographer in Philippines for U.S. Army and was gassed

while developing pictures, died of Addison's disease. D. June 28, 1938, Mason City 1420 N Washington St,

Mason City."

From Clarence Hillig's WWI Draft Registration Card, his nearest relative is Alice D Hillig in Redwood Falls?

Redwood Minnesota (not sure if that's his wife or mother); from the Minnesota Death Index, he died: 2 Oct 1976 and was born 28 Feb 1886; his mother's maiden name was younger.

From the Minnesota Death Index, 1908-2002: [ this is probably a sister to Elma]
Alice Dawn Hillig
b: 19 Jan 1892
d: 24 Jun 1989
Death County: Clay
Mother's Maiden Name: Towne
State File Number 022278
Certificate Number: 022278
Certificate Year: 1989
Record Number: 2324909

1870 Warsaw, Rice county MN Census
145 145 Town, Truman P 48 m w farmer 1600 1000 VT
, Matilda 37 f w keeping house WI
, Benjamin 20 a w help on farm WI
, Josephine 17 f w at home WI
, Frederick 14 m w help on farm MN
, Harriet 12 f w at school MN
, Jannet 8 f w at school MN
, George 4 m w MN
, Anna 2 f w MN

1880 Springdale District 231, Redwood Co MN Census
23 25 Town, Truman? P w m 56 m farmer VT VT VT
, Matilda w f 45 wife m keeping house NY NY NY
, Nettie w f 16 dau MN VT NY
, George w m 14 son MN VT NY
, Anna w f 12 dau at school MN VT NY
, Estella w f 9 dau at school MN VT NY
, Truman? w m 7 son at school MN VT NY
, Lee w m 4 son MN VT NY
, Albert w m 2 son MN VT NY
Davenon?, Horace w m 72 boarder m farmer MA CT MA?

1900 Redwood Falls District 244, Redwood Co MN Census
271 274 Barnes, William R head w m Mch 1859 41 m 16 MN OH Indiana Livery Stable
, Nettie J wife w f Oct 1863 36 m 16 4 3 MN Canada Wisconsin
, Harry J son w m Oct 1884 15 s MN MN MN at school
, Emma L dau w f June 1889 10 s MN MN MN at school
, Alice D dau w f Jan 1892 8 s MN MN MN at school
, Ezra B father w m Aug 1830 69 m OH PA NJ Steam Laundry

1900 Tracy District 157, Lyon Co MN
29 32 Town, Truman (indexed as Juranda) head w m Oct 1824 75 m 45 VT VT VT
, Mittlida Y? wife w f Mar 1835 65 m 45 13 11 NY NY NY
, Alma dau w f June 1873 26 s MN VT NY [I think this may be Elma, but with an incorret birthdate]

1905 Tracy Ward 1, Lyon Co MN State Census
666 Town, Truman P; Morgan St m 80 w VT VT VT 58 1 8 4 capitalist Sold ?? (lived in state 58 yrs 1 mo; in district 8 yrs 4 months.
667 Town, Matilda Morgan St f 70 w NY NY NY 58 1 8 4 Housekeeper

1910 Redwood Falls Ward 2 District 119 MN Census
2nd Street
99 99 Barnes, William R head m w 50 m1 MN Unknown Unknown dealer real estate
, Nettie wife f w 47 m1 26 4 3 MN VT WI
, Amy dau f w 20 s MN MN MN saleslady jewelry store
, Alice f w 18 s MN MN MN

1920 Redwood Falls District 194, Redwood Co Minnesota Census
258 214 222 Barnes, William head m w 59 m Iowa Iowa Iowa real estate
, Nettie wife w 55 m MN Canada Wis(?)
, Amy dau f w 30 s Minn Iowa Minn Music Teacher
Hillig, Alice dau f w 27 m Minn Iowa Minn home
, Clarence son-in-law m w 34 m Minn US US Jeweler
, Jeanette grand dau f w 2 2/12 Minn Minn Minn

1930 Redwood Falls, Redwood County, MN Census
24 25 Hillig, Clarence A head m w 44 m 29 0 6 jeweler
, Alice D wife f w 38 m 24 MN IA IA
, Jeanette dau f w 12 s MN MN MN
, John W son m w 6 s MN MN MN