e,
I did find a little information on some Thoeny's but not sure if this is what you are looking for.
Death certificate for a John Thoeny vol 20 pg 687 died 3-8-1920 age 77yrs. lived at 316 West Ave No LaCrosse. he was a stone contractor and was married. F-George Thoeny Mother not listed as known born in Switzerland. died of a cerebral hemorrhage
Death certificate for Anton Thoeny vol 47 pg 577 born 3-4-1899 died 2-6-1948 born in Fountain City Wi Father-David Thoeny M- Lucia Kliec(?) Informant Mrs. Helen Thoeny
Death Certificate Paul Thoeny vol 47 pg 115 born 6-27-1859 died 7=3=1947 F-Christian Thoeny M- ?Fluetsch resided in Northfield MN Informant was Mrs. Bel Schlosstein of Cochrane, WI
Death Certificate William J. Thoeny Vol 4 Pg 26 Occupation Porter in a restaurant in Chicago, Ill born 4-7-1873 in LaCrosse died 10-15-1897 age 24 years 6mo 8 days from gangrenous appendicitis single F-John Thoeny (says was born in Germany)Mother- Mary Rau(born in Ohio)
Death certif for Fred Thoeny vol 2 pg 278 age 1yr died 7=28=1890 from dysentry ( I forgot to write parents if I get a chance I will have to recheck it)
death certificate for Clara Thoeny vol 45 pg 416 widow of John born 6-30-1866(Germany) died 10-15-1945 cancer of bladder F-August Hedwig M-Fredericka Lauterbach informant was Mrs. Herman Schumann
Death Certificate Charles Thoeny vol 55 pg 185 resided at 514 Sumner St. LaCrosse. informant Mrs. Robert Saley born 6-4-1877 died 11-24-1954 F-John M-Clara Zine(?)
death certificate for Jacob Thoeny vol 37 pg 690
born 10-18-1851(germany) died 11-17-1938 retired storekeeper listed parents as unknown informant Mrs. Ed. Mashak died of cardiac failure

Marriage license Vol 9 pf 13 #205
Thomas P. Carroll F-Henry Carroll M- Bridget Meade he was a farmer born in Caledonia MN resided in LaCrosse married Marie Thoeny F-Jacob Thoeny M- Catherine Gilbert born in LACrosse married 7-17-1906 witnesses Joseph Carroll & Minnie Swords married in Catholic ceremony by Father Wm White
Marriage license pg 41 (need the date to get a copy of)
John Thoeni and Maria Rau Johns occupation Mason
resided in LaCrosse born in Switzerland Father George Simon Thoeni M-Rosa Her parents were John & Sybilla Rau married 10-26-1872 witnesses John Florian & Mrs. Ledeke
ceremony By the Ev.Lutheran Church Minister C.G. Reim
Vol 5 Pg 240 #249 John Thoeny F-George Simon Thoeny M-Rosa Tolscher occupation Mason resided in LaCrosse born in Switzerland married Clara Hedwig parents August Hedwig and Fredericka Lauterback Born in LaCrosse WI witness was Peter Grischott and Megan Thoeny Evang Lutheran Church Minister C>G>Reim married 8-9-1884
vOL 5 PG 128 #261 Simson Thoeny Father George Simon Thoeny M-Rosa Tolscher occupation wagon maker resided in Wykoff MN born in Switzerland married Martha M. Winkelman parents Frederick Winkelman and Henrietta Gesch (?) born in Watertown, WI married 11-27-1882 in LaCrosse Wi married in Lutheran Church by C>G>Reim witnesses August C. Dittman and Emilie Dittman

Birth Certificate Vol 4 pg 157 Marie Elizabeth Thoeny F-Jacob Thoeny (germany)stone cutter M-Katie Siebert(Ohio) born 12-2-1885
Vol 4 pg 361 Thoeny white male other issue living Mary E. F-Jacob Thoeny M-Katie Siebert born 1-28-1887 (child died since he was not listed when next child born and do not have a name could find no death certificate
Vol 6 pg 209 William J. Thoeny other issue Mary E. F-Jacob Thoeny M-Catherine Siebert born 4-4-1891 at 7am
Vol 38 pg 476 Wilma Katherine Thoeny born 11-10-1923 Father William J. Thoeny (Laborer age 32 yrs born in WI M-Mabel Allen housewife born in Minn age 30 yrs
That is all I have I hope this helps you
Jayne