These written by name came in the days of Hezekiah king of Judah, and struck their tents. The Meunim who were found there, and they destroyed them utterly to this day, and lived in their place; because there was pasture there for their flocks.
1 Chronicles 4:39 They went to the entrance of Gedor, even to the east side of the valley, to seek pasture for their flocks.
1 Chronicles 4:40 They found fat pasture and good, and the land was wide, and quiet, and peaceful; for those who lived there before were descended from Ham.
1 Chronicles 4:41 These written by name came in the days of Hezekiah king of Judah, and struck their tents. The Meunim who were found there, and they destroyed them utterly to this day, and lived in their place; because there was pasture there for their flocks.
1 Chronicles 4:42 Some of them, even of the sons of Simeon, five hundred men, went to Mount Seir, having for their captains Pelatiah, Neariah, Rephaiah, and Uzziel, the sons of Ishi.
1 Chronicles 4:43 They struck the remnant of the Amalekites who escaped, and have lived there to this day.
The verse centers on "written", "name", "came", "days", "hezekiah", "king", "judah", and "struck". It is saying that the verse draws attention to "written" and "name", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 40's "They found fat pasture and good and..." into verse 42's "Some of them even of the sons...", so "written" and "name" belong inside that flow. In 1 Chronicles context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "written" and "name" with trust shaped by these words, not by a vague optimism outside the passage.