In doing a general search for the LOUKINAS surname I only found one death record for a LOUKINAS in Fayette County.

Name: Hugh Loukinas
SSN: 285-20-0138
Last Residence: 43160 Washington Court House, Fayette, Ohio, United States of America
Born: 27 Nov 1926
Last Benefit: 43160 Washington Court House, Fayette, Ohio, United States of America
Died: Dec 1982
State (Year) SSN issued: Ohio (Before 1951 )

Records show most of them living in Hamilton County, OH. There is a WW I registration of a Walter LOUKINAS in Hamilton Co. and he's from Vali, Russia. Lithuania was formerly part of the Soviet Union.

Name: Walter Loukinas
Serial Number: 1098950
Race: W
RESIDENCE: 2856 Colerain Ave., Cincinnati, O.
Enlistment Division: Regular Army
Enlistment Location: Fort Thomas, Ky.
Enlistment Date: 09 Aug 1917
Birth Place: Vali, Russia
Birth Date / Age: 28 2/12 Years
Assigns Comment: Co K 56 Infantry to Discharge Mechanic 9 Oct 1917. Defensive Sector. American Expeditionary Forces 3 Aug 1918 to 27 June 1919. Honorable discharge 6 July 1919.
Volume #: 10

If you have any specific names, I can try searching census records.

**I am not related