According to an Orange County sheriff's spokesperson, deputies responded at 12:48 a.m. to a report of a disturbance in the 11000 block of Irwin Street.
The suspect's father suffered significant injuries in the attack, the spokesperson said, while the injuries sustained by the assailant's mother and sister were described as minor.
The victims were each seen conscious and alert as they were placed in ambulances. Their ages were not disclosed.
The alleged attacker, identified only as a man, was taken into custody.
What prompted the apparent domestic dispute is under investigation.