Weld was "one of the architects of the American abolitionist movement during its formative years, from 1830 to 1844 ... [and] remained dedicated to the ... movement until slavery was ended by the Thirteenth Amendment ... in 1865." 
I WAS born as free as the silvery light"Man" by Florence Earle Coates. As published in Poems (1916) Volume I. Also published in The Century Magazine (June 1890) and Poems (1898).
That laughs in a Southern fountain;
Free as the sea-fed bird that nests
On a Scandinavian mountain,
Free as the wind that mocks at the sway
And pinioning clasp of another,
Yet in the slave they scourged to-day
I saw and knew—my brother!
Vested in purple I sat apart,
But the cord that smote him bruised me;
I closed my ears, but the sob that broke
From his savage breast accused me;
No phrase of reasoning judgement just
The plaint of my soul could smother,
A creature vile, abased to the dust,
I knew him still—my brother.
And the autumn day that had smiled so fair
Seemed suddenly overclouded;
A gloom, more dreadful than Nature owns,
My human mind enshrouded;
I thought of the power benign that made
And bound men one to the other,
And I felt in my brother's fear afraid
And ashamed in the shame of my brother.