Mahlon

A man, before Israel's Monarchy · Tribe of Judah · named in 4 verses

the name means sick Strong's Lexicon

Mahlon, the son of Elimelech and Naomi, married Ruth but died in Moab.

From Easton's Bible Dictionary

Sickly, the elder of Elimelech the Bethlehemite's two sons by Naomi. He married Ruth and died childless (Ruth 1:2, 5; 4:9, 10), in the land of Moab.

Easton's Illustrated Bible Dictionary, 1897 — public domain, quoted in full and unedited.

Partners Ruth

Siblings Chilion

From STEPBible's TIPNR genealogy data. A relationship the data marks uncertain is not shown here.

First named at Ruth 1:2.

Ruth 1:2 The man’s name was Elimelech, his wife’s name was Naomi, and the names of his two sons were Mahlon and Chilion. They were Ephrathites from Bethlehem in Judah, and they entered the land of Moab and settled there.
Ruth 1:5 both Mahlon and Chilion also died, and Naomi was left without her two sons and without her husband.
Ruth 4:9 At this, Boaz said to the elders and all the people, “You are witnesses today that I am buying from Naomi all that belonged to Elimelech, Chilion, and Mahlon.
Ruth 4:10 Moreover, I have acquired Ruth the Moabitess, Mahlon’s widow, as my wife, to raise up the name of the deceased through his inheritance, so that his name will not disappear from among his brothers or from the gate of his home. You are witnesses today.”