Chart 1     [† means all children believed found, ‡ means death is computed at 112 years]

Ferrecchia, Gaetano (b:1821)(d:)
. . . . .Ferrecchia, Maria Mattea (b:1855)(d:)[with: Iagatta, Caterina]
. . . . . . . . . .Celozzi, Maria Giuseppa (b:1874)(d:)[with: Celozzi, Nicola Maria]
. . . . .Ferrecchia, Giuseppe (b:1860)(d:1861)[with: Iagatta, Caterina]†

Chart 2     Van Mater, Peter>>Van Mater, Levina B>>Burtis, William Albert>>Burtis, Guilette

Hilgreen, William Joseph (b:1906)(d:1962)
. . . . .Hilgreen, Eugene William (b:1928-1929)(d:)[with: Behuken, Juliana]
. . . . .Hilgreen, William J (b:1930-1940)(d:)[with: Behuken, Juliana]

Chart 3     Van Mater, Peter>>Van Mater, Levina B>>Burtis, William Albert>>Burtis, Guilette

Hilgreen, Anna Estelle (b:1908)(d:1988)
. . . . .Springer, Kenneth (b:1941-1942)(d:)[with: Springer, Herbert W]
. . . . .Springer, John (b:1944-1945)(d:)[with: Springer, Herbert W]
. . . . .<<No Children Found>>[with: Springer, John W]

Chart 4     Van Mater, Peter>>Van Mater, Levina B>>Burtis, William Albert>>Burtis, Edna Elizabeth

Oakes, Frances Edna (b:1910)(d:1986)
. . . . .Ramsey, Lynne J (b:1939)(d:)[with: Ramsey, William J]
. . . . . . . . . .<<No Children Found>>[with: Comfort, Ronald M]
. . . . .Ramsey, Diana B (b:1940-1941)(d:)[with: Ramsey, William J]

Chart 5     Van Mater, Peter>>Van Mater, Levina B>>Burtis, William Albert>>Burtis, Edna Elizabeth

Oakes, Winifred Mae (b:1915)(d:1991)
. . . . .Beisiegel, Jon (b:1938)(d:2009)[with: Beisiegel, Martin Henry]
. . . . .Beisiegel, Allan W (b:1942)(alive: 2024)[with: Beisiegel, Martin Henry]

Chart 6     Van Mater, Peter>>Van Mater, Levina B>>Burtis, William Albert>>Burtis, Edna Elizabeth

Oakes, Esther (b:1922)(d:1995)
. . . . .Landsperg, Harold (b:1945-1946)(d:)[with: Landsperg, Harold F Jr]
. . . . .Landsperg, Richard (b:1946-1947)(d:)[with: Landsperg, Harold F Jr]
. . . . .Landsperg, Robert (b:1948-1949)(d:)[with: Landsperg, Harold F Jr]
. . . . .Landsperg, Barbara (b:1950)(d:)[with: Landsperg, Harold F Jr]

Chart 7     Van Mater, Peter>>Van Mater, Levina B>>Burtis, William Albert>>Burtis, Milton Lomas

Burtis, George E (b:1917)(d:1999)
. . . . .Gawel, Elinor DeBevoise (b:1949)(alive: 2025)[with: Smith, Elinor]
. . . . . . . . . .Wildberger, Lauren (b:1981)(alive: 2025)[with: Wildberger, Stephen T]
. . . . . . . . . . . . . . .<<No Children Found>>[with: Thornhill, Geoffrey C]