There is a very prominent family by that name in Indonesia, one of them was a coffin-bearer at the funeral of Suharto. The family name is written both as Soebarkah and Subarkah, just as Soeharto became Suharto and Soetoro is sometimes seen as Sutoro.
Ah, now I remember. The photo had a couple of straight backed men in military uniforms, and ladies in traditional Indonesian dress.
Interesting to me is that passport document of SAD’s with the name “Soerbarkah” crossed out - in connection with Zero being taken off her passport, wasn’t it? When he was around 10? It’s a pretty big clue that there was something going on in Indonesia that wasn’t in “the Book” - mystery “Soebarkah” name, crossed off meaning taken off her passport (I think I got that right), right around when he left Indonesia. So I would gather that he had been living with the Soebarkah family and she had to collect him and take him back to Hawaii. I wonder what she had been doing in Indonesia then. Not that it matters particularly but it would be telling if she was doing something other than being a housewife with Lolo.