1552 R. Huloet Abcedarium Anglico Latinum Bastardlye, as not after the ryght sort begotten, spurius.

1600 W. Shakespeare Henry IV, Pt. 2 ii. i. 51 Wilt thou, wilt thou, thou bastardly rogue. View more context for this quotation

1749 H. Fielding Tom Jones VI. xvi. ii. 17 Married to a poor bastardly Vagabond. View more context for this quotation

1785 F. Grose Classical Dict. Vulgar Tongue Bastardly Gullion, a bastard's bastard.

1888 Northern Argus (Clare, S. Austral.) 19 Oct. 3/2 She followed him round to his mother's place, abusing him, and told him to keep his ‘bastardly breed home’.

1561 G. Gilby tr. J. Calvin Admon. against Astrol. Iudiciall sig. D.i^v We put a difference betwixte the naturall Astrologie and this bastardly Astrologye which the Magicians haue fayned.

a1631 J. Donne Serm. (1954) VII. 107 Apocryphall and bastardly Canons which they father upon the Apostles.

1720 in T. Lewis Eng. Presbyterian Eloquence i. 2 It is an unlawful, a false, a Bastardly Government.

1765 L. Sterne Life Tristram Shandy VIII. i. 2 I defy him to go on cooly, critically, and canonically,..without ever and anon straddling out, or sidling into some bastardly digression.

c1567 Queen Elizabeth Let. in Nugæ Antiquæ (1769) I. 138 He, of base and basterdlye mynde that wrestells a pluck with the world's order, conceyves therof an evill opynion.

1587 Sir P. Sidney & A. Golding tr. P. de Mornay Trewnesse Christian Relig. xvii. 313 Such an vnkindly and Bastardly Nature, that not euen the best of vs haue any whit of our former nature..sauing onely shame.

1669 W. Simpson Hydrologia Chymica ii. 71 The bastardly fermentation of the blood, in Scurvies, venereal Diseases, malignant Fevers, Plague, &c.

1861 Home League (Hartford, Wisconsin) 20 July The bastardly and ignominious blood of the convict sires that once made their homes on the soil of South Carolina.

1583 P. Barrough Methode of Phisicke iv. viii. 184 A Bastardly tertian is caused, when choler is mixed..with fleume.

1608 E. Topsell Hist. Serpents 65 Others..are without a sting, as counterfeit and bastardly Bees.

1890 Texas Court of Appeals Rep. 28 206 According to Sumner, he spoke of defendant as ‘that God damned lying, thieving son-of-a-bitch’;..and according to McKinney, as ‘that God damned mother-f——cking, bastardly son-of-a-bitch!’

1948 E. Pound Pisan Cantos lxxviii. 57 And merrda for the monopolists the bastardly lot of 'em.

1978 N. Freeling Night Lords xxxii. 157 The fuzz knows every way there is of being bastardly.

2017 Sunday Times (S. Afr.) (Nexis) 1 Dec. A timely reminder of how..men are still as bastardly as they ever were.

1566 T. Blundeville Bredynge of Horses ii. f. 5 in Fower Offices Horsemanshippe The beste kyndes [of horses] that haue bene either in Asia, Affricke, or Europe, from whence these be discended, though parhaps more bastardly then I would wishe.

a1631 J. Donne Poems (1633) 86 Let the minds thoughts be but transplanted so, Into the body, and bastardly they grow.

1755 S. Johnson Dict. Eng. Lang. Bastardly, in the manner of a bastard; spuriously.

1850 Ipswich Jrnl. 9 Feb. This bastard free-trade measure..was bastardly begotten..and it would never prosper in this country.

2004 Afr. News (Nexis) 21 Feb. Onalo said the original master plan of God that marriage should last a couple's lifetime, has not only been bastardly altered, it has been jettisoned.

1990 Re: Re: NY-Times Ad in soc.culture.latin-america (Usenet newsgroup) 24 Oct. I find it bastardly unchristian to preach bringing kids to the world just to die of hunger.

2016 @JeromeTaylor in twitter.com (O.E.D. Archive) 15 Apr. Love this Thai cartoon on how bastardly hot it is right now.