From me down...

My name is Thomas Joseph William Costello Born September 19^th, 1953 in Pasadena, California at Saint Lukes Hospital. I was raised and live in Covina, CA as of this writing December 9th 2017

My Father Thomas William Costello was born January 13^th, 1917 in Parnell Michigan and passed away November 23^rd, 1986 in Covina, CA.   

His Father was William Joseph Costello (B) 5/18/1883 (D) 12/5/1979

His mother was Josephine (Doyle) Costello

She was born on 4 Sep 1886 in Kent Co, Mich. She died on 16 May 1921. She was buried in Parnell Cemetery, Grattan township, Kent Co. Mich.

They were married @ 1913 in Kent Co Mich.

Her family tree can be found 

William had 4 brothers (Frank, James, John and Patrick) and 2 Sisters.. Liza ( Elizabeth ) and Ann

Below is the tree copied from Familysearch.com which is operated by the Church of later Day Saints (LDS)  The tree is located HERE you may need to sign up ( free) to view and search.

John Costello (B)  Born  Cohoes , Albany , New York  2/29/1872 (D) 4/17/1949 
wife Rose Kammers lived in Sault St Marie.  They had 2 kids, Cecil Costello 1916-2015 (Cecil kids Dennis, Gayle, Twila, d Gary) and Maleta Costello 1918- May 21^st, 2003

SLIGER, MALETA ELIZABETH COSTELLO (Age 85)

Formerly of Northern Virginia, died Wednesday, May 21, 2003. She was married to the late Harold C. Sliger. Survivors include her son, Joseph C. Sliger of Alexandria and daughter, Ruth Mullins of Woodstock, VA. A graveside service will be held Friday, May 23, at 2 p.m. at Mt. Comfort Cemetery in Alexandria. A Memorial Mass will be offered at a later date at St. Louis Catholic Church in Alexandria. Arrangements by DELLINGER FUNERAL HOME, Woodstock

Annie (Costello) Malone (B) 7/29/1874 (D) 12/3/1956

Patrick (B)3/17/1877 (D) 1/30/1945 wife Nellie.

Sons Joseph and Leo

COSTELLO, Patrick Joseph From the scrapbook of Bessie Townsend, Page 117, located in the Lyons, Michigan Museum.

Patrick Joseph Costello, 67, of VanderHeyden Court, Ionia. Funeral at SS Peter and Paul church, Rev. Fr. John S. Fons officiating; burial in Mt. Olivet cemetery. Pallbearers: Timothy Sullivan, C. J. Sullivan, ,Michael Egan, Herbert Slowinski, Gerald Brown, Frank McCarthy. Born March 29, 1877 in Parnell, son of Mr. and Mrs. Joseph Patrick Costello. Married 45 years ago to Nellie Byrne of Parnell; lived in Belding; moved 25 years ago to Ionia. Survived by: wife, Nellie; sons, Joseph Costello, Pontiac; Leo, Trufant; three granddaughters; four brothers, John Costello, Sault St. Marie; James Costello, Belding; Frank Costello, Flint; William Costello, Los Angeles, two sisters, Mrs. Edward Finn, Mrs. Anna Malone, Lowell. Burial Mt. Olivet. Was employed by state of Michigan for 28 years.

Leo was killed in a car accident:Newspaper article below which does provide some genealogy.. 

The Ionia Sentinel-Standard, Monday, May 6, 1968

Mrs. Barbara H. Costello, 51, of route 2, Ionia died at 11 a.m. Saturday at

Bronson hospital, Kalamazoo as a result of injuries sustained in an auto

accident near Paw Paw early Saturday morning.  The accident claimed the life

of her husband Leo Costello who was dead at the scene. 

Mr. Costello, 54, was born December 26, 1913 in Belding, the son of Mr. and

Mrs. Patrick Costello.  He was a member of SS Peter and Paul church, Loyal

Order of Moose, Ionia Elks lodge and charter member of Hunting and Fishing

club. Surviving are three daughters, Mrs. Jo Ellen Reeder of Ionia; Mrs. Patricia Ritter of Big Rapids; Mrs. Carolyn Piercefield, Lyons, seven grandchildren and a brother Joseph Costello, of Ionia.

Mrs. Costello was born July 21, 1916 in Ionia county, the daughter of Mr. and

Mrs. Frank Backar and also a member of SS. Peter and Paul church.  Besides her three daughters and grandchildren, she leaves an aunt, of Ionia.

Interment was in Mt. Olivet cemetery.

Elizabeth (Eliza) (Costello) Finn (B) 2/17/1878 (D) 11/29/1963

Frank (B)1/26/86 (D) 5/31/1966 wife Muriel Howard b 9-16-1891 Parnell, 1-20-1984 Flint They had five children as follows

·         Mildred Louise March 16 1917 Flint May 11 1986(married George Edward Sullivan 1917-1988)  Mildreds kids...Mary Ann Sullivan 1949, Susan Louise 1953, John Michael , 1955

·         Ralph James Costello 4-16-1919 9-18-1981  Flint, MI...(Wife Mary Alice Lane b 8-20-1923 d 7-16-2010) Kids Diane 2-28-1948, Karen 3-6-1952, Thomas James  11-27-1956 d 12-8-1991

·         Robert Edward Costello 8-27-1923 Flint, d 12-15-1979...Arlene kids  Judy.. (adopted) 1949

·         Arlene Margret b 9-13-1926 Flint (husband Edward Harold Viall  D 1924) Flint  kids Debbie b 1951 , David 1953, Diane b? Eileen marie b 9-13-1926  ( Delbert Clare Rodammer 1926 d 4-27-2012) Randy 1952, Lori Ellen 1955, Lisa Marie 195?

James 7/18/1881 (D) 5/17/1954 wife Marianne
Moved to Flint became a Fireman

My Grandfather"William"'s  father was possibly named Joseph Patrick Costello or Patrick Joseph but appears he went by Patrick and was buried under that name with his wife was Ann (Daly)

I found this info (Ann. w. of Patrick; d. Jan 14, 1899; a. 51
 y. Costello, Patrick. b. Mar. 17, 1837; d. Feb. 28,1907. posted about the headstone below.....So...do we go by the death certificate or the headstone? Patrick's death certificate clearly has him born in 1831 and 75 years old when he died....Williams Brother James signed the death cert and unfortunately did not know his grandparents names or where they came from in Ireland.

I was told by my Dad that my Grandfather's was given his middle name of Joseph because that was his his Father's name and that is why I was given the middle name of Joseph

Another interesting clue that may prove "Patrick"'s first name was really Joseph is that on Ann's death cert the signature is J Costello not P...I would think that it would be Ann's husband providing the information for her death certificate not one of her children... unfortunately all just speculation at this juncture.