Philadelphia - family of William & Ellen McDevitt

Still trying to locate descendants of the following:

William H. McDevitt, born abt 1840 in Philly; poss. son of William McDevitt, Sr. and Margaret, found in 1870 census of Philly.The elder William was an innkeeper, born abt 1815 in Ireland.

William H. McDevitt had a brother, James McDevitt, born about 1835 in Ireland.They had an Aunt, Joanna Kelly, born about 1820 in Ireland.

William H., his wife, brother, aunt and children are all found in 1880 census of Philly.William H. was a fire inspector.His wie was Ellen, born about 1854, surname unknown.Born either in PA or Ireland.

Their children were all born in Philly:

1.John, born about 1871
2.Annie, born about 1875
3.Ellen, born 13 Aug 1877
4.Mary, born 1879 - had a daughter - Marie Reed.Marie was born 1912, died 1995 in NJ.Marie married a Mr. Wray
5.Margaret, born 1884 - married John J. Strohmeier and had a daughter, Agnes.Agnes was born 1912 and died 2002 in Dover, DE.

I am obtaining vital records on this family to try to find out who John, Annie and Ellen married, and if they had children.

Trying to find connections, as of 2 daughters, no descendants remain!
Thanks,
Wendy L. Hawksley
Dover, Delaware
Stormphoenix@juno.com