This is really a wild card guess. I did a search for "Joan" b. 1922 CA and looked at the births recorded on Family Search. I found one Joan "M." Longdon b. "Dec 2, 1922" in Ventura, CA
It may be possible that someone in the Costello family knows the information that you are seeking. There are a few trees posted online at Ancestry.com. It could be helpful to contact them.
You can do a search at the library if you are not a member of Ancestry.com
Joan M Longdon, "California, Birth Index, 1905-1995"
Joan M Longdon
02 Dec 1922
Ventura, California, United States
1930 United States Federal Census about Joan M Langdon
Name:Joan M Langdon [Joan M Longdon] Gender: Female Birth Year: abt 1923 Birthplace: California Race: White Home in 1930: Ventura, Ventura, California Marital Status: Single Relation to Head of House: Daughter Father's Name: Richard Langdon Father's Birthplace: England Mother's Name: Mary Langdon Mother's Birthplace: England Occupation: Education: Military Service: Rent/home value: Age at first marriage: Parents' birthplace: View image Neighbors: View others on page Household Members: Name Age Richard Langdon 45 Mary Langdon 39 John M Langdon 10 Joan M Langdon 7 David A Langdon 3
William Richard Costello Birth7 April 1836inKillkenny, IrelandDeath18 September 1904inSan Francisco, California, USA
Spouse & Children
Sarah Ann Young1848 – Gracie Costello Ignatius Costello William Costello1871 – Florence Costello1872 – John Costello1874 – Sarah Costello1875 – Richard William Costello1878 – 1942 Joseph Valentine Costello1880 – 1974 Francis John Costello1882 – 1967 Alice Mary Costello1883 – 1960 Mary Costello1886 –