Judy,
Did you mean to say that Ida Martina was a daughter!!!! of your grandparents (although she was born before Jonas and only a short time after Beata) and that your grandparents were siblings? This (siblings marrying) obviously can't be what you meant. I suppose the connection is to Jonas, but their relative ages perhaps indicate a sibling relationship and that Jonas was premature, since he was born less than nine months after Ida Martina.
The spellings in Sweden were most likely Olofsson (or maybe Olufsson)for Jonas and Olofsdotter (or maybe Olufsdotter) for Ida Martina. I think the spelling Olaf is more a Norwegian spelling, although of course I'm not an expert on Swedish names.
I don't see any Ida Martina born anywhere in Sweden in 1842 on the 1890 Swedish Census CD. I can't find her in the 1842 birth records for Aggunnaryd on the Genline site, although I might have missed her since the records are hard to read because of bleedthrough from the front and back of each page.
I thought I'd check the 1890 Swedish Census again to try to find a couple with the names you mentioned and a daughter named Ida Martina. I see this family (although the father was Johan, not Jonas, but the daughter was absolutely not born in 1842 or in any years close to that. She was, however, born in Agunnaryd. You had mentioned an Anna Gustava and I see one. Perhaps this is the family, although there is a big difference between being born in 1842 and being born in 1879.
Post 1271199
Olofsson Brolin, Johan
Backstuguhj.
b. 1843 i Agunnaryd (Kronobergs län, Småland)
Man, married (father)
Klockaregården
Agunnaryd (Kronobergs län, Småland)
Place of birth (original source): Agunnaryds
Post 1271200
Erlandsdotter, Beata
b. 1842 i Pjätteryd (Kronobergs län, Småland)
h.
Woman, married (mother)
Klockaregården
Agunnaryd (Kronobergs län, Småland)
Place of birth (original source): Pjetteryd Krb. l.
Post 1271201
Anna Gustava
b. 1875 i Agunnaryd (Kronobergs län, Småland)
d.
Woman, single (child)
Klockaregården
Agunnaryd (Kronobergs län, Småland)
Place of birth (original source): Agunnaryds
Post 1271202
Ida Martina
b. 1879 i Agunnaryd (Kronobergs län, Småland)
d.
Girl (child)
Klockaregården
Agunnaryd (Kronobergs län, Småland)
Place of birth (original source): Agunnaryds
On the 1900 Swedish Census CD, I see an Ida Martina Brolin (obviously the same one found in 1890) working as a piga (maid)for another family.
Record 2313831
Brolin, Ida Martina
Piga
b. 1879 in Agunnaryd (Kronobergs län, Småland)
Girl
Backa
Sunne (Värmlands län, Värmland)
Place of birth (original source): Agunnaryd, Kronobergs l.
I don't see Anna Gustava in that census. She emigrated in 1891, according to the Emibas CD.
Post 278944
Jonasdotter Brolin, Anna Gustafva
Hemmadotter (unmarried woman)
b. 12/5/1875 in Agunnaryd, Kronobergs län (Småland)
Emigrated 3/25/1891
from Klockareg.Backst.Skogsl., Agunnaryd, Kronobergs län (Småland)
to Amerika
Source: Household Examination Roll, p. 340
Emibas migration file ID: Agunnaryd G 1891 003
Johan/Jonas was listed as Jonas on Emibas, and he was also listed as blind. He and his wife emigrated.
Record 4867448
Olofsson Brolin, Jonas
Soldat f. d.
b. 1843 in Agunnaryd (Kronobergs län, Småland)
Man, married, father
Blind
Agunnaryd Klockargård B. Skogslund
Agunnaryd (Kronobergs län, Småland)
Place of birth (original source): Agunnaryd Kronobergs län
Record 4867449
Erlandsdotter, Berta
b. 1842 in Pjätteryd (Kronobergs län, Småland)
h.
Woman, married, mother
Agunnaryd Klockargård B. Skogslund
Agunnaryd (Kronobergs län, Småland)
Place of birth (original source): Pjätteryd Kronobergs län
I don't know if this is the correct family since the information is so very far off what you posted, but I listed it, just in case.
I looked at the CD Swedish Death Index 1947-2003. I see an interesting Ida Martina born 1879 in Agunnaryd on the same month and day you listed. Her maiden name was Brolin.
18790724-270
Lindell f. Brolin, Ida Martina
Södra Tranhult 1:12
Dead 4/29/1960.
Registered in Södra Ljunga, Hamneda kn (Kronobergs län, Småland).
Born 7/24/1879 in Agunnaryd (Kronobergs län, Småland).
Widow (2/22/1956).
--------------
Corresponding parish(es) as of Jan 1, 2005:
Södra Ljunga, Ljungby kn (Kronobergs län, Småland)
Parish of birth in the records:
Agunnaryd (Kronoberg)
Source records:
DB, FS / DOR 52-60
This appears to be the death record of her husband.
18660830-271
Lindell, Karl Edvard
Södra Tranhult 1:6
Dead 2/22/1956.
Registered in Södra Ljunga, Hamneda kn (Kronobergs län, Småland).
Born 8/30/1866 in Södra Ljunga (Kronobergs län, Småland).
Married man (12/28/1916).
--------------
Corresponding parish(es) as of Jan 1, 2005:
Södra Ljunga, Ljungby kn (Kronobergs län, Småland)
Parish of birth in the records:
Södra Ljunga (Kronoberg)
Source records:
DB, FS / DOR 52-60
The first FAQ on this page provides ideas on how to find living relatives in Sweden.
http://www.augustana.edu/swenson/genfaq/ Judy