Submitted Surname Revision History

From a personal name which was given to a posthumous child, i.e., one born after the death of his father, derived from Latin postumus "last, last-born" (superlative of posterus "coming after, subsequent") via Late Latin posthumus, which was altered by association with Latin humare "to bury", suggesting death (i.e., thought to consist of post "after" and humus "grave", hence "after death"); the one born after the father's death obviously being the last.