קְטוּרָהQᵉṭûwrâh

proper name, feminine: wife of Abraham, after Sarah's death (Genesis 25:1; Genesis 25:4; 1 Chronicles 1:32; 1 Chronicles 1:33)

Pronunciation: ket-oo-raw' · Hebrew/Aramaic (Old Testament) · H6989

Same root

קָטַרqâṭar · H6999to smoke, i.e. turn into fragrance by fire (especially as an act of worship)

Where it appears

Appears 4 times in the Bible.

Genesis 25:1 Abraham married another wife, whose name was Keturah.
Genesis 25:4 Midian’s sons were Ephah, Epher, Hanoch, Abida, and Eldaah. These were all descendants of Abraham through Keturah.
1 Chronicles 1:32 The sons of Keturah, Abraham’s concubine, were Zimran, Jokshan, Medan, Midian, Ishbak, and Shuah. The sons of Jokshan were Sheba and Dedan.
1 Chronicles 1:33 The sons of Midian were Ephah, Epher, Hanoch, Abida, and Eldaah. All these were descendants of Abraham through his concubine Keturah.

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).