There are Lusitania Passenger and Crew Lists on this site under the overall heading Lusitania. You will need to look for those yourself; but from a Passenger List complied by John Eaton; which for some unknown reason fails to distinguish between Lost and Saved; I note:
1st Class: Mrs C.T. Hill
2nd Class: Mitchell Hill; Mrs Robert Hill; W. Spencer Hill
i have so far found in an e-mail in 1st class Charles Tilden Hill,Mrs Frank Rogers Hill and Agnes Bloor Hill.2nd class William Hill and Mrs Robert Hill.survivors were Charles Hill,William Hill and Mrs Robert Hill.dead Agnes Rogers Hill.crew James Hill fate unknown fate. can any tell me more about theese people.