1) Accommodator 2) Benefactress 3) Bondswoman 4) Donor 5) Follower 6) Giver 7) Helper 8) Improver 9) Liberator 10) Obliger 11) Offerer 12) Offeror 13) Patron 14) Rescuer 15) Samaritan 16) Sparer 17) Sponsor 18) Supporter 1) Auxiliary 2) Eleemosynar 3) Good genius 4) Good person 5) Good samaritan 6) Grant giver 7) Guardian angel 8) Helper 9) Kindly helper 10) Pater patriae 11) Patron 12) Provider of grants 13) Salt of the earth 14) Savior 15) Tutelary saint 
[law] A benefactor is a person who gives some form of help to benefit a person, group or organization (the beneficiary), often gifting a monetary contribution in the form of an endowment to help a cause. Benefactors are humanitarian leaders and charitable patrons providing assistance in many forms, such as an alumnus from a university givin...[video game] Benefactor is a computer game for the Amiga computer series, developed by the Swedish team Digital Illusions and published in 1994 by Psygnosis. Benefactor is a mix between a puzzle game and a platform game. It has a similar concept to Psygnosis`s earlier, very successful Lemmings series of games, but also adds its own ideas. I...
• (n.) One who confers a benefit or benefits.
Ben`e·fac'tor noun [ Latin ] One who confers a benefit or benefits. Bacon. 
person who has given help 
[n] - a person who helps people or institutions
helper noun a person who helps people or institutions (especially with financial help)
a person who confers a benefit; kindly helper. · a person who makes a bequest or endowment, as to an institution.
[SAT terms] a person who helps people or institutions a person who helps people or institutions
a person who helps people or institutions[Difficult words] a person who helps people or institutions[Obscure words] a person who helps people or institutions