The two places of origin are nowhere near each other (one is on Croatian-Bosnian border, the other is  the town of PEĆ in Kosovo) so they could have not possibly met *back in the old country* .

You need to look at another marriage pattern that many ethnic Serbian emigrants  followed - that of *arranged marriages*. Men outnumbered women by far in their small ethnic groups, and your ancestors came from areas where until XX century marrying someone outside of their faith was very, very rare. 

Preferably, man who wanted to get married would go and fetch himself a bride in the old country, usually get married there and have her join him as soon as he collected enough money to pay for her trip. In most cases , they stayed within what I call their *comfort zone* of a few parishes when looking for a bride.

If that was not an option, the men who had emigrated and had sisters of marrying age would often send for the sister and arrange for her to marry some other ethnic Serbian man, usually someone they knew  or worked with, or lived in same town, or even the same house, or attended the same church.

You need to figure out where the paths of Aleksa Tomić and Jovo Obućina could have crossed after emigrating to the States.

Someone more familiar with the Kosovo toponyms in all three languages that could have been used -Serbian, Albanian and Turkish will need to weigh in on the possibilities for * Toct* - my guess would be he was from a place called ISTOK , which is phonetically the most similar to what was written as *toct* - ( short vowels, and  /tok/ cluster )

ISTOK  was & is a part of the PEĆ church district and municipality, and still has ethnic Serbian population.

http://en.wikipedia.org/wiki/Istok

This is where Slabina is: http://maps.google.com/maps?q=Slabinja,+Hrvatska+Dubica,+Hrvatska&hl=en&sll=37.0625,-95.677068&sspn=54.928982,79.013672&oq=slabinja&hnear=Slabinja,+Republika+Srpska,+Bosnia+and+Herzegovina&t=h&z=14&iwloc=A

Now Pec is, as Jugoslava says, in Kosovo. The Turks refer to Pec as Ipek. And a lot of Serbs that lived there as well during the occupation. So its possible that they were from those two places.

For Obućina Sofija, the  original church birth records:

-are in state archive in Sisak, Croatia (DASK)

Redni broj: 1337
Župa/parohija/općina: Slabinja
Naselja/mjesta: Kladari, Slabinja, Utolica
Vrsta matične knjige: MKR
Vremenski raspon od: 1793
Vremenski raspon do: 1904
Vjeroispovijest: Pravoslavna
Napomena: nedostaju godine od 1794. do 1872; parohija hrama Prepodobne matere Paraskeve Slabinja
Smještaj: DASK

 

There are other church vital records available for Slabinja too - you can check the listing  I posted here:

http://www.rodoslovlje.com/en/forum/croatia/pravoslavne-mati%C4%8Dne-knjige-sisak-serbian-orthodox-church-vital-records-sisak-county

If you are a member of SGS Rodoslovlje we will contact the archive on your behalf and help you fill out the forms and paperwork to ask for official birth certificate.

I am wondering if its possible to include a picture of the ships manifest?

here :

http://www.ellisisland.org/EIFile/popup_weif_5a.asp?src ="%2Fcgi-bin%2Ftif2gif.exe%3FT%3D\192.168.100.11imagesT715-1832T715-18320048.TIF%26S%3D.5&pID=100873130366&name=Aleksa%26nbsp%3BTomic%27&doa=Apr+03%2C+1912&port=Trieste&line=0006"

But the info is not provided that confirms this is the same person as her ancestor (naturalization documents). US censuses data is not definite - almost all ethnic Serbs who came from former Austria-Hungary were also identified in them  in 1920. and 1930. as  being Serbian/Yugoslavian (ie. from *Serbia*)

So this ALEKSA TOMIĆ was definitely from Peć.  Whether it is the righ one I have no idea without seeing evidence in other related documents.

Jugoslava has been saying Slabinja is in Crotia, isn't this Slabinja in Bosnia? He did say there were two Slabinjas not too far apart. Lois

There are several places that are in the border region. These borders used to shift so these towns can be found in both countries. Something common in Europe.