It appears that Peter Jacobs did not have any children.To follow is his obituary:
Hayward Daily Review Newspaper, Hayward, Alameda County, California 11 June 1958
"Peter Jacobs Last Rites Set
Services for Peter Jacobs, 73, who died yesterday at his home, 711 Seventh St., Hayward, will be held at 9:30 a.m. tomorrow from Sorensen Bros. Chapel, 1140 B St., Hayward.
A native of Holland and resident of Hayward for eight years, Mr. Jacobs was a retired carpenter, formerly employed by the Sailors Union of the Pacific, San Francisco.He had been a member of the union for over 35 years.
He is survived by his widow, Mrs. Josephine Elsie Jacobs.
Interment will be in Lone Tree Cemetery, Hayward."
Thank you for contacting me.Good luck with your research.