The 1860 Kedainiai Jewish Community Candle taxpayers list has an entry for Mendel, son of Eliash.
The 1843 Kedainiai Army Recruitment District Family List has an entryfor Mendel Yofe, son of Eliash, 37 years old and therefore born about
1806.
The 1849 List of Kedainiai Jewish Community Tax payers lists Mendel Yofe, son of Eliash as a vegetable grower.
The 1871 List of Kedainiai Army Recruitment District has an entry for Yofe Mendel, son of Eliash, age 52 in 1858 and therefore born in 1806.
The 1874 Kedainiai Jewish Community Family List alphabetical index has an entry for Yofe Mendel, son of Eliash, age 52 in 1858 and therefore born in 1806. It says he has a son Berel, age 38 and David.
Added 1/2002:
The All Litvak DB on Jew Gen has an entry for Eliash Yofe (son of Borukh, husband of Brayna) and says he had a son Mendel Zelman, age 10 in 1816 and therefore born 1806. The entry agrees with all the info above and is from the town of Kedainiai.
Added 3/2002. I received Excel files from Ada Greenblat of Kaunas SIG on Jewish Gen. It included the 1816 Kedainiai Census. The 1816 Kedainiai census says Eliash had a child: Mendel, 10 in 1816 and therefore born 1806.
Ada also sent the 1863 Kedainiai Military Census. It has a record for Mendel, son of Eliash. Mendel was 57 in 1863 and therefore born 1806. He has a son Berel, 27 in 1863 and therefore born 1836.
Ada sent the 1868 Kedainiai Military Census. It has a record for Mendel, son of Eliash. Mendel was 52 in 1858 and therefore born 1806.
Added 6/07
A 78 year old Mendel Yoffe, son of Eliash died on 7/9/1878 in Kedainai of old age. Therefore born 1800. That is likely to be this Mendel.
1806
9 JUL 1878