Thanks for replying.
The Ilgunas names that I have records for originated from the area around Marijampole, Lithuania. That area was part of the Suwalki/Suvalkija gubernia (Russian for "province" during Russia's occupation of Lithuania from 1795 to 1918.
During that time Klaipeda/Memel would have been under Prussian/German occupation.
What is the source of your info that gives "Klaipeda or Suvalk" as possible places of origin?
I will check my records to see if there are any entries for Joseph/Juozas.
I'd suggest getting the church marriage records of the 1901 marriage to see if it lists more info about their parents and where they might have originated from.
I also see there's another Josef Ilgunas arriving in New York City from Liverpool (age 26) on May 22, 1904. His last foreign residence was "Middlesbro(sp?)".
Hope this helps as a starting point.