eald

So Ealdthryth is eald = old and thryth = strength.

Black Sabbath Gets Medieval ealdthryth 2003

[11] Anglo-Saxon _ealdorman_ (_eald_ means "old").

Early European History Hutton Webster

Thus we have, in the more ancient language -- eald; plural, eald-E; with Chaucer -- old; plural, old-E, &c.

Blackwood's Edinburgh Magazine, Volume 57, No. 357, June, 1845 Various

Cf. _Laws of AElfred_, C. 17: Nā þæt ǣlc eald sȳ, ac þæt hē eald sȳ on wīsdōme. l.

Beowulf Robert Sharp 1879

Hwearf þā hrædlīce, þǣr Hrōðgār sæt, eald and unhār mid his eorla gedriht; ēode ellen-rōf, þæt hē for eaxlum gestōd

Beowulf Robert Sharp 1879

E. remarks of the hyphened eald-fæder, "hyphens are risky toys to play with in fixing texts of pre-hyphenial antiquity"; eald-fæder could only = _grandfather_. eald here can only mean _honored_, and the hyphen is unnecessary.

Beowulf Robert Sharp 1879

Grendel, 1777. eald-gewyrht, st. n., _merit on account of services rendered during many years_: nom.pl. þæt nǣron eald-gewyrht, þæt hē āna scyle gnorn þrowian,

Beowulf Robert Sharp 1879

Hord-wynne fond eald ūht-sceaða opene standan, sē þe byrnende biorgas sēceð nacod nīð-draca, nihtes flēogeð

Beowulf Robert Sharp 1879

Geseah þā on searwum sige-ēadig bil, eald sweord eotenisc ecgum þȳhtig,

Beowulf Robert Sharp 1879

Næs þæt þonne mǣtost mægen-fultuma, þæt him on þearfe lāh þyle Hrōðgāres; wæs þǣm hæft-mēce Hrunting nama, þæt wæs ān foran eald-gestrēona;

Beowulf Robert Sharp 1879