Sentence:  With louder plaints the mother spoke her woes, / And blessed the cot where every pleasure rose; / And kissed her thoughtless babes with many a tear, / And clasped them close, in sorrow doubly dear; / Whilst her fond husband strove to lend relief / In all the silent <WSD>manliness</WSD> of grief. 
Meaning of the word marked with <WSD> tags:  The quality of being manly; the set of qualities, traits and abilities considered appropriate to men (as opposed to women or children); similarity to a man.