Hi Anne, The problem I & many other helpful people on here find, is that the info supplied is not informative enough. One, I live in Scotland & some things are French to me, as the name Krohn there is so many & with no Birth Date & place for example, don't know which one you may require, if you understand. Fredericka does she have a maiden name date & place of birth.
Anyway here is a few I hope may help you.

Name: Andw Johnson Krohn
Birth Year: abt 1838
Age: 69
Death Place: Lancefield, Victoria
Father's name: Erohn Jonas
Mother's name: Inger Dahlgren
Registration Year: 1907
Registration Place: Victoria
Registration Number: 186.
Andrew J Krohn
in the Victoria, Australia, Wills and Probate Records, 1841-2009.
Name: Andrew J Krohn
Record Type: Probates
Death Date: 2 Jan 1907
Death Place: Cobaw
Occupation: Farmer
Grant Date: 27 Jun 1907
Grant: P
Probate File Number: 102/860.
Said No Duty Payable this day 15 Jul 1907.
A few trees on net tho' no death certs in them. Is this the family, maybe as death dates seem true.
Andreas Johannsen KROHN
1838–1907
BIRTH ABT 1838 • Gothenburg, Västra Götaland, Sweden
DEATH 1907 • Lancefield, Victoria, Australia.
Wife.
FrIedrecka PETERSEN 'Frederika Eugenie' RUDAWOLD
1851–1913
BIRTH 16 FEBRUARY 1851 • Gothenburg, Västra Götaland, Sweden
DEATH 1913 • Lancefield, Victoria, Australia.
They had at least 6 children.


Harry.

DEATHS.

Name: Andrew Johnson KROHN.
Died: 1907 Lancefield, Victoria.
Age: 69 years.
Father: Jonas KROHN.
Mother: Inger DAHLGREN.
Ref: Registry of Deaths, Victoria. Reg. #1862.

Name: Fredericka Eugenie KROHN.
Died: 1913 Lancefield, Victoria.
Age: 62 years.
Father: Carl Johnson PETERSON-RUTH.
Mother: Charlotte RUDOLPH.
Ref: Registry of Deaths, Victoria. Reg. #6025.

Keep in mind the informant supplying information for a deceased person was not always correct.

hi harry, thanks very much. obiously there were spelling mistakes in the registration of Andrew krohn,s death. honestly Fredericka may be my g grandmother, but she drives me to distraction. her birth record you have is correct, but on it per olaf Petersen is named and charlotte ruth ****. I had a dna match for him. but on her marriages she named franz Petersen as her father. I don,t know why she used the name rudawold. her 1st marriage was to greger samsing at asargstrand Norway 1868. 2nd to andreas aka Andrew krohn 1878 oslo.her daughter hilda samsing from her 1st marriage was a famous nurse with the aust army ww1. she was on the 1st troopship into Gallipoli. her brother Gerhard eugen/ aka George I don,t know much about. they both died 1957 cremated in springvale cemetery Melbourne vic.as Fredericka was illegitimate I,ve wondered was she adopted or fostered. or in an orphanage. by the way my Scottish ancestors come from fife. under the heading james Donaldson Watson vic. you will find his story. so thank you very much for all you have done and apologies for being so vague.. all the best anne stell

hi harry, anne again, andreas krohn b 1837 hogsater fargelanda Sweden son of per Anderson and Ingrid ersdaughter. there were about 7 sons. most were sailors. cheers anne

hi Tonkin, thanks for your info. I was beginning to think we were wrong about there death places, as I said to harry, Fredericka is a bit of a pain. as her name is different on the death certificates of her sons. cheers anne

The Age Wed 9 Jan 1907
KROHN (nee Smythe).— On the 5th Jannary, at High-street, Lancefield, the wife of Fred Krohn, of Warburton — a son. Both doing well.
Leader Sat 13 Jun 1908
KROHN.— On the 24th. May, at Warburton, the wife of Fred. Krohn— a daughter. Both well
Andrew Krohn's place was at Cobaw in the Macedon Ranges on the Kyneton road, between Kyneton and Lansfield.

The Age Thursday 2 Jan 1908
KROHN.— in loving remembrances of my dear husband and our dear father, Andrew Krohn, who passed away at Cobaw on 2nd January, 1907.
—Inserted by his loving wife and children.
The Age Sat 10 May 1913
KROHN.— On the 2nd May, at her Residence Cobaw after a long and painful illness. Mrs. Andrew Krohn, relict ot the late Andrew Krohn, aged 52 years.
Lancefield Mercury and West Bourke Agricultural Record, Fri 4 May 1917
WATERLAND—KROHN.
The marriage was celebrated on
Monday, last, by the Rev. W. T. C.
Stoors, M.A., of Mr G. Waterland to
Miss "Betty" Krohn, both of Lancefield. The ceremony took place at
St. Matthew's Church of England, High-street, Prahran, and the guests were
afterwards entertained at Mrs Cole's cafe, Chapel-street.
The bride wore a creme silk poplin coat and skirt, with hat to match, and
carried a silk bag, the gift of Mrs Slade. The bridesmaid, Miss Lily
Latta, was attired in ivory silk, with hat to match. Master Slade,
nephew of the bridegroom, officiated as bestman, the bridegroom being given
away by her brother, Mr F. Krohn.

thanks to each of you for your help and information, in the end I only had to ask, I,mguessing Fredericka died from cancer as we have so much of it in our generation, thanks so much cheers anne