Who is Salvador Carriscant from The Blue Afternoon: A Novel and what is their importance?

Salvador Carriscant is the son of Archibald Muir Carriscant, from Scotland, and Juliana Ocampo, from the Philippine Islands. In 1893 he travels to Europe and receives a medical degree complete with then-modern theory and training. He returns to Manila in 1897 where he meets and marries Annaliese Leys, the Philippine-born daughter of German nationals. From 1898 through 1902 Carriscant practices medicine at San Jerónimo hospital while the occupying American army fights a vicious colonizing war against Philippine Nationals. Carriscant's modern practices of sterile procedures and sound surgical techniques put him into conflict with Dr. Isidro Cruz, the hospital's chief surgeon and an adherent to outmoded and brutal medical methodologies.