Natal, a.
Etymology: [L. natalis, fr. natus, p.p. of nasci to be born: cf. F. natal. See Nation, and cf. Noel.]
1. Of or pertaining to one's birth; accompying or dating from one's birth; native. Princes' children took names from their natal places. Camden. Propitious star, whose sacred power Presided o'er the monarch's natal hour. Prior.
2. (Actrol.)
Presiding over nativity; as, natal Jove.
Syn. -- Native, natural. See Native.
Shades of meaning
Fernald has no entry of its own for natal; he lists it under native.
Where he writes about it:
Native denotes that which belongs to one by birth; natal that which pertains to the event of birth; natural denotes that which rests upon inherent qualities of character or being. — from native
We speak of one's native country, or of his natal day; of natural ability, native genius. — from native