In 1910, the family was living at 3777 Oliver St and William's work had graduated to that of a naval architect. The next year, William was working at the Brookly Navy Yard, and his youngest son Claude Andrews was born in Staten Island, Richmond County, New York.

The family returned to Washington D.C. in the 1920s where they lived at 1215 Emerson Street NW; by the 1930 census their address was 1215 Arkansas Avenue. By this time, Lucille was married to her first husband and living in New York City, and Andre and William, Jr. had their own
families also.

With his children now grown, William Sr. left, returning to his birthplace, Macon, Georgia about 1936. There he had an office supply manufacturing business and then in WWII, he returned to work for the Navy Department at the ordnance plant in Macon. During this time, he married Elizabeth Jane "Bettie" Kerr, a Pennsylvania native. William died in 1948 and Bettie died in 1972.

Their obituaries were published in the Macon Telegraph newspaper:

Wednesday, December 29, 1948
"Death Claims W.J. LaVarre At Home Here"

"William J. LaVarre, retired naval architect, died unexpectedly yesterday shortly after suffering a heart attack near his home on Pio Nona Bypass. LaVarre apparently suffered the attack while helping to fight a brush fire near Pio Nona between Hightower Road and Newberg Avenue. Bibb Forest Ranger W.B. Redding, who was also helping to fight the fire, quoted a member of LaVarre's family as saying he had collapsed and had to be pulled out of range of the fire. LaVarre spent 14 years in Washington with the Navy Department. During this time, he helped construct many warships including the old cruiser Galveston and the old Iowa. He also conducted trial tests on the famous four-stacker class of destroyers. He also served with the US Lighthouse Service, building aids to navigation and tenders. One of his earlier jobs was the remodeling of the USS Oregon after her famous trip around the Horn. During World War II, he was a naval inspector at the Naval Ordnance plant here. He is survived by his wife, Mrs. Bettie Kerr LaVarre;three sons, William LaVarre, former Augusta-newspaperman, explorer and writer for the American Weekly; Claude LaVarre, sewing machine executive in Cuba, Andre LaVarre, film producer and world traveler and two other children. Funeral arrangements will be announced later by Hart's Mortuary."

Tuesday, January 4, 1949

"Private funeral services for William J. LaVarre, whose death occurred at his residence on Route 3, on Dec. 28th, will be held in the chapel of Hart's Mortuary Tuesday at noon. The Rev. T.M. Bailey will officiate. LaVarre was born in Macon and after making his home in Washington D.C. for a number of years, he returned to Macon 12 years ago."

Monday, December 4, 1972
"Mrs. Lavarre Services Tuesday"

"Mrs. Elizabeth Bettie Lavarre of Scotland Heights Apartments died Saturday. Services will be held Tuesday at 10:30 a.m.at Macon Memorial Park. Mrs. Lavarre was a native of Pennsylvania and had lived in Macon for the past 30 years. Hart's Mortuary has charge of arrangements."