Have read this thread for a while now and done some research.
It appears that the main question you ask is why and how there was a divorce between Inga and Ole and whether the verbal information you have on Ole O. Drevdal and Inga Tambs is correct. I think your questions are interesting to examine. A divorce was very rare at that time and there has to beesome special circumstances that make this possible and desirable.You seem also to be unsure of the family backgrounds of Ole, Inga and also Sverre Fredriksen. I have a lot of details about these families. Several of them have been described both by family researchers but also by history researchers.I think that some of the reasons why they could make adivorce can be found in their background history.
I will for now onlygive an overview.
Parents of Ole were shipowner Hans Olsen and Anne Kathrine (Kristiansdatter) Drivdal (Drevdahl). Hans Olsen seems to have come from a poor family, but both he and two of his brothers became rich because they exploited the opportunities that arose when Skudeneshavn became the most important fishing port for herring fishing for decades.
Hans was first pilot, but became captain and exported salt herring in barrels. He later invested in several ships in most cases together with his brothers. I have an overview of the ships he owned, and pictures from paintings of some of them. I also have pictures of both Hans and Anne Kathrine in a book.
Father of Anne Kathrinecame from the cityFlekkefjord and the name Drevdahl or Drivdal come from an area near the town. He came to Skudeneshavn in 1820 and married a woman in which both parents were born in Germany but moved to Skudesneshavn and ran shiping and trading.
Hans Olsen died May 11, 1866, 52 years old. The widow Anne Kathrine took over
business operations and the same year, she sent two ships with salt herring to the markets in Europe.
She continued to invest in ships and when the herring fishery ended in 1870 in Skudesnes area she managed the transition better than most. In 1875, she was still rich with a fortune of20 000 spesesiedaler.
Ole was No. 4 in the series of siblings of 7, but the eldest son. His mother had the finances to give him a good education and he took a law degree (Cand.jur.) from the University of Oslo. The examination had to be taken with the Latin language and was very demanding in those days. He took a job as assistant lawyer at Voss near Bergen, and probably met his wife there.
They were married April 19, 1881 and the first child was born 28 October the same year
and baptized in Skudeneshavn April 19, 1882.
Most likely she was pregnant before marriage and it was certainly not the best start to married life in 1881.
He found work there as a sheriff (lensmann 1882-1888). After a few years I find that he also owned shares in two ships that came from Skudeneshavn. He has probably also helped his mother with her business deals.
I think his mother shared her wealth between her seven children in 1885 and Ole took over the ship with the name "Hans Olsen," and owned it until 1888.
(This ship has an interesting "life story" that is described in a separate journal article.) It looks like he gives up his career as a lawyer.
The next thing I know about him is that he lives in 1900 in Oslo and has a clerk job in a ministry.
In the period between 1900 and 1910 he marries Bertine Karine Gjessen. She was born May 23 1861 in Skudeneshavn and was the daughter of a captain and shipowner there.(Rasmus Larsen)
She was widowed in 1900, and was hotel owner in Skudneshavn.
In 1910 the couple lives in Bergen and he works as a customs inspector.
(Østre Murallmenningen 12, Bergen.)
He dies at his home in Bergen, January 10, 1911 and is buried in Skudeneshavn.
Cause of death is"heart paralysis", most likely a heart attack.
As heirs are listed two children in America and his second wife.The documents said that furniture and some shares in the apartment is his wife's personal property and that there is nothing to inherit after the deceased.
So over to Inga Tambs and her family backgrounds. What one can say with certainty is that she came from a very privileged family who for generations had held high positions in society and owned large estates.
I quote from an article I found on the internet.
A historian named Skadberg has published an article on the family Rolfsen, where he gives an overview of the family to the wife Abrahaminebut he also mentions Nils Fredrik Severin Tambs.
(my translation with some adding.)
Gunnar A Skadberg: Familien Rolfsen i Bergen
in Bergensposten NR.2 juni 2011 14. ÅRGANG
(Bergensposten is a publication that has been published by the National Archives in Bergen since 1998.)
Jørgen Rolfsen and his wife Susanna Maria Hansen, Mandal among others became parents to daughter Abrahamine, (called Mina) born in Mandal on 5. august 1815. Abrahamine was in 1846 married to Nils Fredrik Severin Tambs, Born in Skjeberg 27 June 1814 the son of Lieutenant Colonel Hans Fredrik Tambs and Karen Margrete Stang (died in Stavanger in 1852).
Nils Fredrik Tambs's discharge from Fredrikshald school in 1831 andgraduated with honors. Tambs gratuated from University of Oslo with a law degree with haud in 1840. He renewed this exam with honors (laudabiles) five years later.
He worked a time as clerk to magistrate Cappelen in Skien before he was hired as clerk in the Treasury (Oslo).
In 1849, Tambs came to Stavanger as lawyer. He was elected to the City Council and were alternates to the Parliament in 1854. He is obviously in the depreciation of money when he came to Stavanger. In 1853 he first received a loan of 2000 spesidaler from "Consul Jonas Kielland's Legacy" and then he got the loan of 1050 spesidaler from city treasuries.
(annual salary in 1860 for a good servant was about 30 thalers.)
Tambs was mayor of Stavanger from 1852 to 1859.
(He was elected to the Norwegian Parliament (Stortinget 1859-1861) in 1859, representing the constituency of Stavanger.)
The 11 September 1861 he was appointed sorenskriver (judge, magistrate, probate judge)in the southern Sunnmøre (lived in Volda) and 22 December 1873 in Hardanger and Voss. He died on Vossevangen 28 July 1885.
These children of the marriage Tambs was born in Stavanger:
1) Hildur Alexia, born 16.07-1850
2) Alma Albertha, born 14.10-1852
3) Inga Benedicte, born 12.07-1854
4) Agnes Mathilde, born 17.03-1856
5) Selma Constance, born 17.03-1856
6) Hugo Eugen, born 28.07-1860
To me it seems as if the transition from a protected family life with her parents to be a young mother in unfamiliar surroundings and with a man who was probably busy with his work must have been considerable.
The economic situation was bad in the shipping industry and many lost money.
Sailing ships were eventually outcompeted by steamship and it was only the most financially strong who managed the transition.
It is possible that Ole Drevdahl also had financial difficulties. I have no direct evidence but see for example that one of his co-owners of a ship ended his professional career as a lighthouse keeper.
Divorce was very rare and well below a half percent of marriages ended in divorce. Most women did not have the finances to take such a step and was also bound by strong attitudes in society. But the woman's position in society was debated in the higher circles, and it is likely that Inga was well oriented.
Henrik Ibsen wrote A Doll's House in 1879 that deal with such a privileged family and the position of women in family and society.
I believe that divorce was not necessarily a desperate act of Inga.
I believe that her experiences from her own childhood was that the daily care of children were not the parents work but were attended by servants of various kinds. (Nurses, governess, private tutors.)
She had the financial means to take such a step and could probably be fairly confident that the children had a reasonably good upbringing by his father, who probably had the help ofservants, and was surrounded by his family, among them an unmarried sister nearby.
I also believe that the decision about who should be responsible for the children were settled into a legally binding agreement.
I think it may be possible to find more information about this divorce in the state archives in either Stavanger (or Bergen), but this is information which is hardly available on the Internet.
Brief description Sverre Fredriksen
Sverre Fredriksen's father was a lawyer in Vikedal in the same county(Rogaland) as Tambs.
He was a perioda higher ranked lawyer than Tambs and could argue in court cases in the higher legal system. (Overrettsakfører versus Underrettsakfører)
They knew each other most probablyprofessionally and perhaps private and it is therefore quite possible that Inga knew Sverre Fredriksen from the time she lived in Stavanger.(Until 7 years old)
His father died early and it looks like family economy was bad after that. I do not know if his mother had the finances to give him an education.
He may well also have worked in Skudeneshavn which was the nearest city from Vikedal and become aware of Inga there.