I think back to some people I wondered why no one knows their name, such as someone who has no doubt saved many lives. Charles Drew was an African American physician who revolutionized blood transfusions and created the first major blood bank from 1904 to 1950.
Another is from church history is Elishama in Jeremiah 36:12, A scribe whose presence in the historical records offered external validation of biblical narratives, confirming the accuracy of the accounts.
From Pity to Praise 