Habd was a retired Redguard sailor.
Habd bought Frostflow Lighthouse to live in with his wife and children. Several days after, noises began coming from the cellar, so he went to the town to buy some traps. Returning, he found his wife dead and a chaurus, which he killed.
Desperate, he tried to lock the beasts out but was captured by the Falmer and reunited with his daughter. (According to his daughter's diary, his son ran away.) He contracted a severe fever, and knowing he was going to be fed to the chaurus, he left an iron dagger to his daughter to save her from the pain.
The Dragonborn may find his decomposed remains inside a Chaurus Reaper and throw them to the fire at the top of the beacon, so he can see the sea forever as he always wanted. This grants the Dragonborn the Sailor's Repose active effect.