Most likely
威廉·
维博福斯 (William Wilberforce), the British evangelical MP whose decades-long campaign produced the 1807 Slave Trade Act and the 1833 Slavery Abolition Act. The 2006 film 《
奇异恩典》 (Amazing Grace) dramatises his life. Modern Chinese sources also write
威伯福斯 /
威尔伯福斯 for the same name — there is no fully fixed transliteration.