אֲחִילוּדʼĂchîylûwd

proper name, masculine: child's brother (?)

Pronunciation: akh-ee-lood' · Hebrew/Aramaic (Old Testament) · H286

Meanings

1. father of Jehoshaphat, David's chronicler (2 Samuel 8:16; 2 Samuel 20:24; 1 Kings 4:3)

2. father of Baana, officer of Solomon (1 Kings 4:12)

Same root

אָחʼâch · H251a brother (used in the widest sense of literal relationship and metaphorical affinity or resemblance (like father))
יָלַדyâlad · H3205to bear young; causatively, to beget; medically, to act as midwife; specifically, to show lineage

Where it appears

Appears 5 times in the Bible.

2 Samuel 8:16 Joab son of Zeruiah was commander of the army. Jehoshaphat son of Ahilud was the royal historian.
2 Samuel 20:24 Adoniram was in charge of forced labor. Jehoshaphat son of Ahilud was the royal historian.
1 Kings 4:3 Elihoreph and Ahijah, the sons of Shisha, were court secretaries. Jehoshaphat son of Ahilud was the royal historian.
1 Kings 4:12 Baana son of Ahilud, in Taanach and Megiddo, all of Beth-shan near Zarethan below Jezreel, and all the territory from Beth-shan to Abel-meholah and over to Jokmeam.
1 Chronicles 18:15 Joab son of Zeruiah was commander of the army. Jehoshaphat son of Ahilud was the royal historian.

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).