4:32 PM PT -- 1/19 -- Marvin Gaye III allegedly grabbed his wife by the neck and lifted her off the ground before her cousin intervened, and then he began physically attacking both women before pointing a handgun at them ... at least according to the wife, who just got court-ordered protection from Marvin Gaye's son.
In Wendy Gaye's request for a domestic violence restraining order, she claims Marvin threatened to shoot her and her cousin as they ran out of the house.
In the docs, obtained by TMZ, Wendy says it wasn't the first abusive incident over their 12 years together ... and she claims he's threatened her with a gun on multiple occasions in the past.
The judged signed off on the restraining order ... and Marvin now must stay a football field away from her and her cousin and has to move out of the home.
More marital issues for Marvin Gaye III, son of Motown icon Marvin Gaye... his wife is seeking court-ordered protection after he got arrested for allegedly pointing a gun at her.
Marvin's wife, WendyGaye, beelined it to court Tuesday and filed for a domestic violence restraining order against her husband ... according to online records.