For apparent examples in 17th c. (probably to be referred to the attrib. use of eldern = ELDER sb.1) see ELDER sb.1 3.
Made of elder.
1842. Akerman, Wiltsh. Gloss. (E. D. S.).
1847. in Halliw.
1875. Parish, Dict. Sussex Dial., s.v., An eldern stake and blackthorn ether Will make a hedge to last for ever.
