there would appear to be no John Caine born Lonan in 1826 - the nearest (and Cain is not that common in Lonan) is John Caine s/o James + Isabella Caine

(there are some 35 John Cains born 1823 - 1829)

The Lonan family appears to be
date name parents
30 APR 1805 JOHN JAS CAIN ISABEL QUINE married Lon 1805-02-23
18 DEC 1808 JAMES JAMES CAIN ISABELLA QUINE
01 JAN 1809 ELIZABETH JAMES CAIN ISABELLA QUINE
28 JUL 1811 ISABELLA JAMES CAIN ISABELLA QUINE
01 AUG 1813 ISABELLA JAMES CAIN ELLINOR QUINE
02 JUL 1815 MARGARET JAMES CAIN ISABELLA QUINE
08 JUN 1823 JOHN JAMES CAIN ISABELLA QUINE

however the large gap between margaret + John may indicate problems in attribution or missing children