Synonyms of origin in English:

beginning, start, origination, genesis, birth, dawning, dawn, emergence, inception, launch, creation, birthplace, cradle, early stages, conception, inauguration, foundation, outset

source, basis, base, cause, root, roots, spring, mainspring, well head, fountainhead, fountain, fount, head, seat, seed, germ

fons et origo

formal commencement

literary wellspring

rare radix

source, derivation, root, roots, provenance, etymology

North American provenience

descent, ancestry, parentage, pedigree, lineage, line, line of descent, heritage, birth, extraction, background, family, stock, blood, bloodline, genealogy, beginnings

rare filiation, stirps