A bit of background.
(1) A passenger manifest for an immigrant ancestor has a name which appeared to me to be FOIVL or FEIVL. Multiple people have looked at it, and all agree the first letter is an F, 2nd letter is E or O, 3rd letter is I, 4th letter is V, U or N, 5th letter is L or E. On the manifest there are no distinguishing characteristics between the V/U/N and the E/L letters. For example, Chave and Chane look identical, and I only know they are different because of my research.
(2) The issued Certificate of Arrival (COA) transcribed the name as JOINE. The Petition for Naturalization has JANIS (clearly legible and written multiple times). The immigrant ancestor changed his name and wrote, "JANIS AKA JACK."
(3) Immigrant's father's death certificate lists his father (immigrants grandfather) as YANOH and JewishGenner's said it must have been a typo and should have been YONAH. (Grandfather known to be deceased at time of immigrant's birth.)
(4) Immigrant's granddaughter thought immigrant's name was YONAH.
I am beginning to think immigrant had a double-first name but I find nothing to support the pairing of Yonah and Feivel. Nor can I find any names remotely like JANIS.
I would be most open to any thoughts or ideas.