"one who tends or takes care of anything," mid-15c., agent noun from mind (v.). Also from 15c. in now-obsolete sense of "one who has a good memory."
Entries linking to minder
mind v.
mid-14c., "to remember, call to mind, take care to remember," also "to remind oneself," from mind (n.). The Old English verb was myngian, myndgian, from West Germanic *munigon "to remind." Meaning "perceive, notice" is from late 15c.; that of "to give heed to, pay attention to" is from 1550s; that of "be careful about" is from 1737. Sense of "object to, dislike" is from c. 1600. Meaning "to take care of, look after" is from 1690s. Related: Minded; minding.
Negative use "(not) to care for, to trouble oneself with" is attested from c. 1600; never mind "don't let it trouble you" is by 1778; the meiotic expression don't mind if I do is attested from 1847.