early 13c., whennes, with adverbial genitive -s, from Old English hwanone, related to hw?nne (see when). Spelling with -ce (1520s) reflects the voiceless pronunciation.
例文
1. No one ordered him back whence he came.
どこからどこへ行くかを命令した人はいない。
2.They returned whence they had come.
彼らはどこから来てどこに戻ってきたのか。
3.All are good lasses,but whence come the bad wives?