#benefactor__helper  a person who helps people or institutions
  supertype:  good_person  a person who is good to other people
  subtype:  benefactress  a woman benefactor
  subtype:  bondsman__bondswoman  someone who signs a bond as surety for someone else
  subtype:  donor.benefactor__giver__presenter  person who makes a gift of property
     subtype:  abnegator  one who gives up or relinquishes or renounces something
     subtype:  almsgiver  a person who gives alms
     subtype:  Indian_giver  one who ask you to return the present he has given you
     subtype:  philanthropist__altruist  someone who makes charitable donations intended to increase human well-being
        instance:  Andrew_Carnegie__Carnegie  Peter_Cooper__Cooper  Ezra_Cornell__Cornell  Solomon_Guggenheim__Guggenheim  John_Harvard__Harvard  Milton_Snavely_Hershey__Hershey  Hopkins__Johns_Hopkins  Andrew_William_Mellon__Mellon__Andrew_Mellon__Andrew_W._Mellon  Alfred_Bernhard_Nobel__Nobel__Alfred_Nobel  First_Viscount_Nuffield__Nuffield__William_Richard_Morris  John_Davison_Rockefeller__Rockefeller__John_D._Rockefeller  Cornelius_Vanderbilt__Vanderbilt__Commodore_VAnderbilt  Elihu_Yale__Yale
     subtype:  subscriber__contributor  someone who contributes (or promises to contribute) a sum of money
     subtype:  subsidizer__subsidiser  someone who assists or supports by giving a subsidy
     subtype:  tipper  a person who leaves a tip; "a generous tipper"
  subtype:  donor  (medicine) someone who gives blood or tissue or an organ to be used in another person (the host)
     subtype:  blood_donor  someone who gives blood to be used for transfusions
        subtype:  universal_donor  a person whose type O Rh-negative blood may be safely transfused into persons with other blood types
     subtype:  organ_donor__organdonor  someone from whom an organ is taken for transplantation
  subtype:  good_Samaritan__Samaritan  a person who voluntarily offers help or sympathy in times of trouble
  subtype:  humanitarian__do-gooder__improver  someone devoted to the promotion of human welfare and to social reforms
  subtype:  liberator  someone who releases people from captivity or bondage
     subtype:  emancipator__manumitter  someone who frees others from bondage; "Lincoln is known as the Great Emancipator"
  subtype:  obliger__accommodator  someone who performs a service or does a favor
  subtype:  offerer__offeror  someone who presents something to another for acceptance or rejection
  subtype:  patron__sponsor__supporter  someone who supports or champions something
     subtype:  backer__angel  invests in a theatrical production
     subtype:  godfather  someone having a relation analogous to that of a male sponsor to his godchild
     subtype:  godparent  a person who sponsors someone (the godchild) at baptism
        subtype:  godfather.godparent  any man who serves as a sponsor for a child at baptism
        subtype:  godmother  any woman who serves as a sponsor for a child at baptism
     subtype:  guarantor__surety__warrantor__warranter  one who provides a warrant or guarantee to another
     subtype:  patroness__patrones  a woman who is a patron
  subtype:  provider  someone who provides the means for subsistence
  subtype:  savior__saviour__rescuer__deliverer  a person who rescues you from harm or danger
     subtype:  messiah__christ  any expected deliverer
  subtype:  sparer  someone who refrains from injuring or destroying
  subtype:  uncle.benefactor  a source of help and advice and encouragement; "he played uncle to lonely students"

No statement uses or specializes benefactor; click here to add one.