Seeking information on Elizabeth Marks who died aged 50 in the sinking of the RMS Lusitania 7th May 1915, her daughter Georgina also died.

I have the following information on her children.

Georgina born in Clutton 2nd quarter of 1891 - died 7th May 1915.
Gilbert Henry born 9th February in Clutton 1887 - became a naturalized American citizen in 1919.
Joseph Ernest born in Clutton 18th August 1888 - became a naturalized American citizen 1916.

any information would be greatly appreciated