ハク, いき, えき, か, き, は, ひろ
chief, count, earl, uncle, Brazil
JLPT1 G7 S7 F1741
人 person + 白# for the sound alone to simulate a monosyllabic term of address children would direct toward an older person of the approximate age of one's father → respected elder male → *eldest brother*; *count*; *earl*.
[Full Kanji Etymology List]