I found another surname for Julia Gall. On a Nova Scotia vital stats site, I uncovered a birth registration for Michael Gall, born in 1915.
He is the son of Joe Gall and a woman named Katie who apparently lived one street over from the Gall address on Currys Lane in Whitney Pier, Sydney NS.
Joe and Julia had Mike baptized into their family a month later. On another birth document ( for Anthony Gaul), Julia’s maiden name is listed as KUTAK.
This seems to lead to her town of origin being in Slovakia near Bratislava, where there are Kutak families living there to this day.
I will fill in the blanks as soon as i can put things together, in a logical framework.