Looking for Slaughter family information

I am searching for any information on William Lonnie Slaughter (Sr). He was born in Oklahoma in either 1899 or 1900. The family moved from OK to MO then to the Santa Monica/Malibu area of California between 1900 and 1920. He was in the navy aboard the USS Idaho in 1920. He was married to Ida Pearl Mason and lived in San Diego in 1930 and had a daughter in 1924 named Helen Virgina Slaughter (she died in San Francisco in 1960's). Lonnie also had a son with Fern Vansant in 1926 (they were not married). We have some photos of this man with yet ANOTHER family and it looks to be around 1940-45. He was with a woman identified as Harriett, thier daughter Teresa/Theresa or Teressa and his brother Ted (Samuel Theodore Slaughter) at an unknown fishing cabin. Here is some extra info

His father was Samuel Slaughter born 1861 in Iowa
Mother was Mintie Smith born in Arkansas
Oldest brother Mordicai (only 1 census record shows this name)
Brother - Samuel Theodore (Ted)
Brother - William Lynn (Lynn - born 1898 died 1970/71 ca)
Photos of him in the navy
1920 census shows William L Slaughter, born OK, 1900 aboard USS Idaho in San Pedro, ca.
Rumored to be a Policeman somewhere in Southern California in late 1920's/early 1930s.

My fiance is his granddaughter...daughter of his son by Fern Vansant. Lonnie was never brought up when she was a child and her father died when she was a teenager. Its taken over 2 years to gather the information we have and every time we find a new lead it contradicts or alters what whe thought we knew. Any help is greatly appreciated. My email address is [email protected]

My grandfather was samuel Ss

My grandfather was samuel Ss in East Tenn-he was a womanizer

Not the same Samuel...

Samuel Slaughter went from Indiana to Missouri to Kansas to Oklahoma and finally to California. He was hit by a car in 1935. Samuel Theodore was born in Oklahoma and lived in Ok, KS and Ca. Died in the 1960's.

I was just wondering where

I was just wondering where the slaughter family name came from i am Irish and it is not a common name in Ireland so i was just wondering if anybody could help me out a bit