אֱלִיצוּרʼĔlîytsûwr

proper name, masculine: chief of Reuben (Deuteronomy 32:4; Numbers 1:5; Numbers 2:10; Numbers 7:30; Numbers 7:35)

Pronunciation: el-ee-tsoor' · Hebrew/Aramaic (Old Testament) · H468

Same root

אֵלʼêl · H410strength; as adjective, mighty; especially the Almighty (but used also of any deity)
צוּרtsûwr · H6697properly, a cliff (or sharp rock, as compressed); generally, a rock or boulder; figuratively, a refuge; also an edge (as precipitous)

Where it appears

Appears 5 times in the Bible.

Numbers 1:5 “These are the tribes and the names of the leaders who will assist you:TribeLeaderReuben Elizur son of Shedeur
Numbers 2:10 So the total of all the troops on Reuben’s side of the camp is 151,450. These three tribes will be second in line whenever the Israelites travel.
Numbers 7:30 On the fourth day Elizur son of Shedeur, leader of the tribe of Reuben, presented his offering.
Numbers 7:35 For a peace offering he brought two bulls, five rams, five male goats, and five one-year-old male lambs. This was the offering brought by Elizur son of Shedeur.
Numbers 10:18 Reuben’s troops went next, marching behind their banner. Their leader was Elizur son of Shedeur.

Source: Brown, Driver and Briggs, Hebrew and English Lexicon of the Old Testament (1906), public domain; markup by unfoldingWord, CC BY (github.com/unfoldingWord/Brown-Driver-Briggs-Enhanced).