🔼The name Tilon in the Bible
The name Tilon occurs only once in the Bible. He is mentioned as one of four sons of Shimon of Judah (1 Chronicles 4:20), but no further details of this man's life are submitted.
The name Tilon appears to originally have been spelled as תולון (Tulon) but the Masoretes deemed this an error and substituted it with תילון (hence 'Tilon' in the derived translations).
🔼Etymology of the name Tilon
It's not clear at all where the name Tilon might come from, but there are several possibilities. Alfred Jones (Dictionary of Old Testament Proper Names) thinks it has to do with an Aramaic verb נתל (natel) that means to give, but a Hebrew audience might have figured that the name Tilon may be somewhat like the name Jalon (ילון, which is also a Judahic name, mentioned just prior to Tilon, in 1 Chronicles 4:17) and be related to the root group לון (lun):
Slightly more likely, even, is that our name was thought to derive from the verb ילל (yalal), meaning to howl, and turned into a personal epithet by replacing the second identical consonant with the familiar waw-nun couple. See the word תולל (tolal) that also may derive from our verb and which bears a striking resemblance to our name:
For a meaning of the name Tilon, NOBSE Study Bible Name List seems to draw towards the verb לון (lun II) or perhaps ילל (yalal) and reads Scorn. Jones' Dictionary of Old Testament Proper Names proposes Gift (after the Aramaic connection). BDB Theological Dictionary neither offers an interpretation nor points towards a particular root.