Blazon: Vert a castle triple-towered or windowed gules between two lions rampant combatant of the second, langued of the third, in chief a double-headed eagle displayed and in base a lamb passant argent
The motifs of the castle and the lions are extremely popular in Spanish municipal arms as a reference to the twin kingdoms of Castile and Leon. Unfortunately, I cannot find any information on the potential origins of the eagle or the lamb.
Blazon: Per quarterly gules and vert on a bend or between II and III two bars gemelles or surmounted by a pile reversed argent, a lion’s gamb erased gules armed azure between two cinquefoils pierced ermine
Crest: On a wreath argent and gules an owl close affronté supporting between its wings a pelt charged with a shuttle erect, all proper
Supporters: On the dexter a lamb guardant argent; on the sinister a tiger guardant, the tail reflexed up along the exterior thigh proper