Hi Carol, My apologies for such a tardy response. Joseph Paul O'Kane and Mary McGurk were the father and mother of Thomas O'Kane, born in Maghera, County Londonderry, Ireland about 1819, Bernard O'Kane, Nancy O'Kane Whelan, Eliza O'Kane McGurk, Ellen O'Kane Henry, and Bridget O'Kane McNamara.
John Mullen and Jane Todd were the father and mother of Anne Mullen born in Dungiven, County Londonderry, about 1826.
The above named Thomas and Anne were the father and mother of Joseph O'Kane born in Boston on January 11, 1847. They also had one daughter, Mary Aloysia born in 1850. Thomas died at San Juan Del Sur, Isthmus Panama, on his way to California on June 3, 1852 at the approximate age of 33 and was probably buried at sea. Anne died in Boston on November 8, 1875 and was buried in the family plot in Holyhood Cemetery, Brookline, Ma. The above named Joseph O'Kane married Mary Elizabeth McCarty. They had two daughters, Anne born in 1867(died at 3 months of age), and Mary Elizabeth born in 1879. They had four sons. William Aloysius (1877-1937), Joseph Early Cyril (1881-1943), Arthur Francis born in 1883, Died ? (my brick wall) and Francis Stanislas(1893-1975). The above named Joseph Early Cyril O'Kane married Mary A. Lanman (1883-1921). They had one daughter, Gertrude Miriam O'Kane Lasseter and two sons, Joseph Cyril O'Kane Jr. (1907-1974)and Paul Vincent O'Kane. Joseph C. O'Kane Jr. married Ebba Victoria Rudfors, a.k.a.Rydberg. They had two sons, Joseph Cyril O'kane III, and John Francis O'Kane.
Joseph C. O'Kane III, married Mary Alice Senesac (these are my parents)and have two daughters, Elizabeth Victoria O'Kane and Tamara Anne O'Kane Rousseau. They also have a son, Joseph Cyril O'Kane IV.
Joseph O'Kane IV married Tammy Reed. They have (at this time...) one daughter, Ashley Taylor O'Kane and one son Joseph Cyril O'Kane V.
I do have much more information on all of these people with the exception of the sisters of Thomas O'Kane. I don't know if this is the Ellen Henry and family that you are looking for but i hope it helps. If you would like more information please e-mail me directly at firstname.lastname@example.org.