Lonan 1871 Yard
C 42
In loving memory of JOSEPH COWIN beloved husband of SARAH JANE COWIN of Minorca Laxey
who died April 21st 1909 aged 65 years. His end was peace
Also SARAH JANE widow of the above who died Dec. 14th 1922 aged 75 years. Thy will be done
Also ROBERT RUSSELL HENRY beloved husband of LYDIA HENRY and son in law of the above
who died in Liverpool September 10th 1933 aged 50 years
Also LYDIA HENRY widow of the above who died March 12th 1964 aged 82 years. Re-United

Lonan Burial Rgister
Joseph Cowin Minorca 65 yrs buried 23 Apr 1909
Sarah Jane Cowin Minorca Hill Laxey No age given buried 17 Dec 1922
Robert Russell Henry71 Lime Grove Liverpool 50 yrs buried 13 Sep 1933
Lydia Henry of Spring Bank South Cape (Nobles Hospital) 82 yrs buried 15 Mar 1984

You mentioned that Sarah Jane was nee Kermode
In C 40 & 41 there are some Kermodes ? related

In loving memory of MARY ANN KERMODE wife of JAME KERMODE of Laxey (Joiner)
who died Jan 29th 1911 aged 60 years
Also FREDERICK JAMES son of JAMES KERMODE who died April 21st 1911 aged 34 years
Also JAMES KERMODE husband of the above MARY ANN KERMODE who died March 20th
1922 aged 76 years.
Also JOHN MYLREA CROWE of Church Hill Laxey, the beloved husband of MARY JANE CROWE
who died July 4th 1950 aged 72 years
Also MARY JANE wife of the above who died August 26th 1960 aged 81 years

As for finding wills, if in IOM, the only place I know where to look is in Brian's index--not sure how far the indexing goes.
I believe there are some wills not yet indexed which are available at Manx Museum and maybe in LDS films--not sure.

Donna