My great-grandmother’s brother James Deasy (1867-1918) kept a journal that included a family history. It starts out like this:
June 10th, 1895 Cambridgeport U.S.A.
To whom it may Concern
One morning in the year of our Lord, 1867, Was born the Author of these lines But as fair fortune has not favoured me with Enough education to enable me to write a Family History while having Abundant material for the same I will write it in plain words & hope for someone that may be able to copy & correct this account if any misplaced words should occur. Such an account has been sadly neglected by so Old a family as ours has been. While I am sure there has been several in the family capable of writing a complete family History.
I will therefore relate as I find them the stories told by my father, Grandfather & Granduncle both now dead. My Granuncle was a fairly well Educated man and always took an active interest in the family. But for some reason or other he has never left us any information concerning our Forefathers or relations other than the fireside talks so common in the South of Ireland.
According to my Grandfather his Grandfather was one Bernard Deasy which in his youth owned a Farm in Carbery, County Cork, Ireland. But on account of his love of native land was forced to fly to France leaving a young Wife & 3 children to struggle for existance amid persecutions & Poverty which must surely follow.
Whether he was Shipwrecked or murdered is not known but . . . nothing was ever heard of the banished Bernard.
There follow several generations of Deasys who marry nameless women and emigrate around the world never being heard from again. There are instances of the “three sons emigrate but two are lost” motif. I have no way to check his information. But for now, I am going to pick up here with the information which seems more solid: James’s parents and grandparents.
1. JAMES DEASY1 married ELLEN CROWLEY around 1800. Both were from County Cork, Ireland. They had the following children, all born in Co. Cork:
 i. JAMES DEASY – see below.
ii. Mary Deasy – emigrated to the US and eventually settled in California
iii. Ellen Deasy – emigrated to the US and eventually settled in California
iv. Margaret Deasy – emigrated to the US and eventually settled in California, where she married a man from Limerick, Ireland named Brown. They had 4 children.
v. Catherine “Cate” Deasy – married John Sullivan from West Cork and emigrated to Cambridge, Massachusetts. Their children were:
a. Michael Sullivan. Did not emigrate with the rest of the family but stayed in Ireland.
b. Ellen Sullivan married Arthur Seaverus from Scituate, Mass. She died in 1944 in Brookline, Mass.
c. Dennis Sullivan. Married a woman named Fraser. Died in 1921 in Massachusetts.
d. Margaret Sullivan married Daniel Lehane from Co. Cork. Lived in Clinton, Mass.
e. Patrick Sullivan emigrated to the US via Manchester, England.
f. James Sullivan. Emigrated to the US, worked as a logger and disappeared after 1920.
vi. Patsy Deasy
vii. another boy Deasy
viii. another boy Deasy
2. JAMES DEASY2 (James1) married HONORA MCCARTHY from Aherlow, Co. Cork in Ireland about 1866. Their children were born in Co. Cork:
i. James Deasy, b. 1867 in Carrigtohill. Died 1918 in Cambridge, Mass. He wrote the family history quoted above.
ii. MARGARET TERESA DEASY3 (James2, James1), b. 4 March 1872 in Bandon, Cork. Emigrated to Massachusetts in 1890. She lived in Cambridge, Mass. and worked as a maid. Married JOHN JAMES HEGARTY of Cork on 23 April 1895 in Somerville, Massachusetts. They had 9 children, all born in Cambridge, Mass., among them my grandfather Michael Hegarty. You can read about them over on the Hegarty page.
iii. Patrick Deasy, b. abt. 1874. Died in Ireland in 1951. Had a son named James.
iv. Timothy Deasy, died in the First World War. There is so much conflicting information here that I can’t narrow it down more than that.
v. Jeremiah Deasy, b. abt. 1880 in Co. Cork. Died in a work accident, 1926.
vi. Honora Deasy, (1881-1944). Married James Murray. Had 7 sons, one of whom, James, died in World War II. I can’t find his record, but supposedly he died at Normandy.
vii. Michael Deasy died as a little boy.
viii. Cornelius Deasy died in a work accident in his early 40s.
ix. Ellen Deasy died as an infant.