a1825 [see sense 7a]. 1844 ‘J. Slick’ I. iii. 31 I'll be blamed if you've the least bit of Yankee in you.
1867 R. Young 11 I'm bleamed if we beant in a mess.
1876 ‘M. Adeler’ xv Blamed if I haven't forgotten that word.
1883 S. K. Hocking ii. 11 Blamed if you're not a pretty little gal, anyhow.
1905 H. R. Martin 322 I'm blamed if I dare adwise you.