Hildebrand

fem. proper name, German, literally "battle-maid," from fem. of Old High German hild "war, battle, fight, combat," from Proto-Germanic *hildiz "battle" (source also of Old English (poetic) hild "war, battle," Old Saxon hild, Old High German hilt, Old Norse hildr), from PIE *keldh-, from root *kel- "to strike, cut" (see holt). Hild-/-hild was a common Germanic name-forming element; compare Hildebrand, Brunhild, Matilda.

Old English hild figured widely in kenning compounds: Hildbedd "deathbed;" hildegicel "blood dripping from a sword," literally "battle-icicle;" hildenædre "arrow, lance, spear," literally "war-adder;" hildesæd "weary of fighting, battle-worn," literally "battle-sad."

Old English brand, brond "fire, flame, destruction by fire; firebrand, piece of burning wood, torch," and (poetic) "sword," from Proto-Germanic *brandaz "a burning" (source also of Old Norse brandr, Old High German brant, Old Frisian brond "firebrand; blade of a sword," German brand "fire"), from PIE root *gwher- "to heat, warm."

The meaning "iron instrument for branding" is from 1828. The meaning "mark made by a hot iron" (1550s), especially on a cask, etc., to identify the maker or quality of its contents, had broadened by 1827 to include marks made in other ways, then to "a particular make of goods" (1854). Brand-name is from 1889; brand-loyalty from 1961. Old French brand, brant, Italian brando "sword" are from Germanic (compare brandish).