🔼The name Elmadam in the Bible
The name Elmadam (or Elmodam, as some translations have it) occurs only once in the Bible, namely in Luke 3:28, where he is presented as an ancestor of Jesus of Nazareth, namely the great-great-great-grandfather of Zerubbabel.
The genealogy of Matthew doesn't mention Elmadam because even though both derive Jesus from king David, Matthew's genealogy goes though Solomon while Luke's genealogy goes through Solomon's brother Nathan.
🔼Etymology of the name Elmadam
It's not clear where the name Elmadam comes from. Most scholars appear to hold that it is a Greek transliteration of the Hebrew name Almodad, which in turn is a name of dubious etymology — please see our article on that name for the details.
If Elmadam is indeed the same as Almodad, the second part of our name may either derive from the verb מדד (madad) meaning to measure, or from דוד (dod), meaning beloved.
However, the name Elmadam obviously ends with an m and not with a d, as does Almodad, and it's by no means certain that the two have anything to do with each other. In fact, the madam-part may very well come from the particle מ (me), meaning of or from, plus the word דם (dam), meaning blood:
The name Elmadam looks like it consists of the Hebrew word for God plus the phrase מדם (medam), meaning "of [the] blood". The exact same term occurs frequently in the Old Testament, most often in Leviticus (Leviticus 4:5, 4:16, 4:25, 4:34, etcetera). Ergo, the name Elmadam may mean Immeasurable, God Is Loved, or Who Does God Love? after Almodad, but also and perhaps even more so God Of The Blood.