Searching for Zifovich family / ЗИФОВИЧ

[Joanna]

Hello
I have recently uploaded my fathers Dna to Gedmatch and My Heritage.
His closest match on both is to Wolf Zifovich born 1869 Kovan'Kivka, Ukraine. Wife Reeva Gistran. Father Peter.
Wolf Travelled to Australia about 1912 with son Reuben Zifovich born 1896 Marunsk, Siberia.
Son Peter arrived in Australia some time later, what became of Reeva I do not know.
I have had no replies to emails or messages I have sent to family. There are trees on ancestry with Wolf and family in Australia but all are connected through marriage.
I am posting here in the hope that some one knows of this family or one day might search and find this.
Many thanks.