WordNet sense 1 (United States songwriter whose songs embody the sentiment of the South before the American Civil War (1826-1864)):

Stephen Collins Foster, Stephen Foster

WordNet sense 2 (promote the growth of):

further

WordNet sense 3 (providing or receiving nurture or parental care though not related by blood or legal ties):

surrogate

WordNet sense 4 (of parents and children; related by adoption):

adoptive

WordNet sense 5 (help develop, help grow):

nurture