This Kostkan family is not in my line, but belongs to the husband of a lady who is a first cousin to my step-2nd-cousin via the Jakl line. Seems to me that you and I have several names that overlap, as I have seen your name before.
James (Vaclav) Kostkan, birth possibly 28 Sep 1865, arrival 26 Mar 1901, died 1915. Father John Kostkan. Wife Marie Dolezal, birth 25 Mar 1879. Father Thomas Dolezel. She remarried. Family history from this point forward is fairly complete. We are attempting to go back.
A family story is that the little girl who arrived in 1901 died accidentally.