Late Middle English; earliest use found in William Langland (c1325–c1390), poet. From proud + heart. Compare Old Icelandic hjarta-prúðr stout-hearted, generous.
Definition of proud-heart in US English:
proud-heart
nounˈpraʊdhɑːt
rare
A proud-hearted person.
Origin
Late Middle English; earliest use found in William Langland (c1325–c1390), poet. From proud + heart. Compare Old Icelandic hjarta-prúðr stout-hearted, generous.