Looking for Denis Murphy-Ellen Mulcahy Descendants

Cobh:

My great-grandmother Catherine Murphy was born in 1865in Queenstown (Cobh). Her parents were Denis Murphy (a seaman) and Ellen Mulcahy and they lived at 11 The Mall, Queenstown.

Catherine immigrated to San Francisco, CA in 1894. Her sister Mary Ellen immigated to San Francisco, CA in 1890 and married Michael Downey (from Waterford),

Denis Murphy (b ~1840) and Ellen Mulcahy (b 1841) they were married in Cobh in 1862.

Denis and Ellen Murphy had 10 / 8 living children according to the 1901 census.

They were: James (b 1863), Catherine (b 1865), Mary Ellen (b 1867), Mathew (b 1870), Patrick (b 1873), Margaret (b 1875), Teresa Anne (1878), Denis (b1880), James Joseph (b1882-1919), & Charles Denis (b 1885)

Ellen Mulcahy's parents were David Mulcahy (1806-1870) and Cate Hurley (b. unknown).

Denis Murphy's parents were most likely: Denis Murphy and Margaret Leonard (births unknown).

Any help to find out more information about this family and/or any living decendants would be greatly appreciated.

Thanks,
Lenore LeMans