Trofim Piskofsky Essex county, Massachusetts

[ukrainian_genealogist]

Hello, this is my first post there. I'm from Ukraine. I found out that half-brother of my greatgreatgrandfather, Trofim Piskowec (Piskofsky) immigrated to Peabody, Essex county, Massachusetts. The first time he did this on 28.12.1909. Here is the link from familysearch: https://www.familysearch.org/ark:/61903/3:1:3Q9M-C9T3-5HXV-M?i=186&cc=1368704. His number is 18. I even found him in 1910 census. Link: https://www.familysearch.org/ark:/61903/3:1:33S7-9RJ8-D1Q?i=62&cc=1727033&personaUrl=%2Fark%3A%2F61903%2F1%3A1%3AM2JJ-667. Now he's in number 86. He was in the United States from 1909 till 1912 as I understood. Then he returned to his native village Buzowka (https://ru.wikipedia.org/wiki/%D0%91%D1%83%D0%B7%D0%BE%D0%B2%D0%BA%D0%B0_(%D0%A7%D0%B5%D1%80%D0%BA%D0%B0%D1%81%D1%81%D0%BA%D0%B0%D1%8F_%D0%BE%D0%B1%D0%BB%D0%B0%D1%81%D1%82%D1%8C). And on 25.03.1913 he went to Peabody again (https://www.familysearch.org/ark:/61903/3:1:3Q9M-C9TC-CSNS?i=408&cc=1368704). Number 25. He visited his brother Filip, but I can't find anything about his immigration record on familysearch. I know that he returned back to Buzowka before 1917. Maybe there are some records about it too? And the last record about Trofim, which I found, was his draft record dated 02.09.1918.https://www.familysearch.org/ark:/61903/3:1:33S7-9BRT-8B8?i=1080&cc=1968530&personaUrl=%2Fark%3A%2F61903%2F1%3A1%3AKZNN-M5Q. And that's all. I couldn't find him in 1920 census. Maybe he died in WWI? Or maybe he returned back to Ukraine? I also found that in 1932 he didn't live on 18 Sherman street in Peabody. He married in Buzowka, and all of his children were born there. One of his daughters was born on 15.05.1913. That means that he was in his village at the time she was conceived. But he wasn't in Buzowka at the time she was born. Please help me!