You are doing very well.
You are very lucky to have that marriage certificate.
Saphat = Josephat
Palagie = Palagea or Pelagea (Greek origin meaning of the sea) Two martyrs listed on Orthodox Calendar. One born in May and other in October.Frequently Ruthenian children were named by local priest as per saints listed on Orthodox Christian Calendar.
(Ellis Island) Josef's wife is not named Pelagea. Not particularly legible, but does look like it starts w/KA????
Vitalij is a scholar at Brandeis University in Boston. email@example.com
His wife, Iryna, does the translating. Both are very helpful.