What is "burthened"

Usage examples of "burthened".

Falkner answered, but the remorse that burthened his heart gave something of bitterness to his reply.

It would indeed--spirit and heart would both break--were my conscience burthened with the sin of deserting my father.

But nothing could check their fury: with loud cries and flashing weapons they fell upon the enemy, who burthened by their prey, and wearied by their very outrages, could ill resist men fighting to avenge their desolated hearths.

This man, called Roger, and nicknamed Long Roger, his length being his chief distinction, had been very poor, and burthened besides with several infant children: accidents and a bad season brought them to the verge of starvation, when a chance threw him in the way of the Duke of Clarence, who got him made servitor in the Tower.