A1. William Bernard Petre, 12th Baron Petre, * 1817, + 1884, Md. 1843, Mary Theresa Clifford, + 1895, d. of Hon. Charles Thomas Clifford, ISSUE SEE HERE.
A2. Henry William Petre, Hon., of Springfield Lawn, Essex, * 1820, + 1889, Md.1) 1842, Mary Ann Eleanor Walmesley, + 1885, d. of Richard Walmesley, of Middleton Hall, Essex.
B1. Francis William Petre, * 1847, + 1918, Md. 1881, Margaret Cargill, + 1933, d. of Edward Bowes Cargill, of Dundin, N.Z.
C1. Edward Henry Petre, Maj., * 1881, + 1942.
C2. Bernard Francis Petre, * 1884, + 1944, Md. 1922, Anna Constance Easther, + 1975, d. of Capt. F. J. Easther, R.N., of Dunedin, N.Z.
D1. Francis John Petre, of St. Albans, Christchurch, N.Z., * 1923, Ms. 1947, Patricia Josephine Corcoran, + 1990, d. of Walter Corcoran.
E1. John Bernard Petre, of Invercargill, N.Z., * 1949, Md. 1972, Kathleen Cullen.
F1. Brendan John Petre, * 1973.
F2. Damian Roy Petre, * 1977.
F3. Matthew Patrick Petre, * 1982.
F4. Rebecca Marie Petre, * 1980.
E2. David Chrsitopher Petre, of Palmerston North, N.Z., * 1964, Md.1) 1978 (div. 1994), Meryl Kemp.
F1. Denis Christopher Petre, * 1985.
F2. Michael Francis Petre, * 1987.
F3. Amy Elizabeth Petre, * 1981.
F4. Josephine Mary Petre, * 1982.
Md.2) 1996, Glenda Barnaby.
E3. Gerald Michael Petre, of Christchurch, N.Z., * 1959, Md. 1988, Robyn-Anne ?
E4. Frances Mary Petre, of Christchurch, N.Z., * 1948, Md. 1974, Michael Pucilowski.
F1. Anna Gabrielle Pucilowski, * 1976.
F2. Jane Frances Pucilowski, * 1978.
E5. Philippa Josephine Petre, * 1951, Md. 1983, James Frederick Goater, of Nagoya, Japan.
F1. Oliver James Goater, * 1984.
F2. Georgina Naomi Goater, * 1984.
D2. Robert Cargill Petre, of Dunedin, N.Z., * 1925, Md. 1954, Emily Waiwaha Kohere, of Rotorua, N.Z.
E1. Robert Bernard Petre, * 1961, Md. 1994, Moana Colbert.
F1. Rogan James Petre, * 1997.
F2. Jakson Devon Petre, * 2000.
E2. Christopher Andrew Petre, * 1963, Md. 1997, Janine Millar.
F1. Quintin Cargill Petre, * 1998.
F2. Maxwell Andrew Petre, * 2000.
E3. Mary Ellen Petre, * 1955, Md. 1977, Neville James Forrest.
F1. James Andrew Forrest, * 1980.
F2. Garth Alan Forrest, * 1982.
E4. Raewyn Kuru Petre, * 1957, Md. 1979, Martin Allen Hay.
F1. Larry Dwain Hay, * 1981.
F2. Kuru Anne Hay, * 1984.
E5. Jennifer Ann Petre, * 1965, Md. 1991, Wayne David Pitcaithly.
F1. Rebekah Emily Pitcaithly, * 1996.
F2. Kate Elizabeth Pitcaithly, * 1998.
D3. William Bernard Petre, of Dunedin, N.Z., * 1927, + 1999, Md. 1974, Margaret Doreen ?
D4. Constance Elizabeth Mary Petre, of Auckland, N.Z., * 1931, Md. 1955, Lambertus Jocobus Snellaert.
E1. Peter William Snellaert, * 1957.
E2. Michael John Snellaert, * 1961, Md. 1982, Bernadette Cleary.
F1. Sarah Louise Snellaert, * 1989.
F2. Claire Michelle Snellaert, * 1991.
E3. Philip Bernard Snellaert, * 1965, has issue by Sheryle Anne Greenfield.
F1. Jacob Cain Snellaert, * 1992.
F2. Darryl Elizabeth Snellaert, * 1996.
E4. Jacqueline Mary Snellaert, * 1956, Md. 1978, Daniel Tangata.
F1. Nicholas Tobias Tangata, * 1981.
F2. Benjamin Daniel Tangata, * 1991.
F3. Helen Frances Tangata, * 1983.
F4. Anna Elizabeth Tangata, * 1990.
E5. Catherine Elizabeth Snellaert, * 1959, Md. 1982 (div.), Peter Gembitsky.
C3. William Robert Joseph Petre, * 1886, + 1954, Md. 1918, Alice Carr Robinson.
C4. Joseph Austin Petre, * 1893, + 1972, Md.1) 1921, Eleanor Norton, + 1935, d. of H. H. Norton, of Auckland, N.Z.; Md.2) 1940, Leonora Agnes Sunley, + 1941, d. of Robert M. Sunley, of Christchurch, N.Z.
D1. Anthony John Petre, of Christchurch, N.Z., * 1941, Md. 1967, Barbara Anne Armstrong, d. of Charles Edwin Armstrong, of Geraldine, N.Z.
E1. Robert Joseph Petre, * 1973.
E2. Ruth Leonora Petre, * 1968.
E3. Adrienne Joanne Petre, * 1970.
C5. Henry William Petre, * 1899, + 1983, Md. 1931, Cicely Bresesford FitzHerbert, + 1990, d. of Anthony Francis FitzHerbert.
C6. Philip Lewis Petre, * 1903, + 1968.
C7. Rosamond Margaret Petre, * 1883, + 1954, Md. 1922, Armand Sibretti, of Rome, Italy, Issue.
C8. Gertrude Mary Petre, * 1888, + 1972.
C9. Constance Mary Petre, Sister of Mercy, * 1890, + 1967.
C10. Isobel Mary Petre, * 1895, +, Md. 1922, Hubert V. O達erne, + 1959.
D1. Joseph Francis O達eirne, * 1923, Md. 1951, Moana Kent, d. of William H. Kent, of Auckland, N.Z.
D3. Margaret Ellen O達eirne, of Nelson, N.Z., * 1925, Md. 1951, Richard John Langbein, s. of Edward Langbein, of Stoke, Nelson, N.Z.
E1. Brian Richard Langbein, * 1954.
E2. Christopher Edward Langbein, * 1958.
E3. Peter Hugh Langbein, * 1961.
E4. Janet Helen Langbein, * 1953.
E5. Patricia Margaret Langbein, * 1956.
E6. Susan Mary Langbein, * 1959.
C11. Monica Helen Mary Petre, * 1897, + 1983, Md. 1930, Capt. John Niall Fox, M.C., + 1968, s. of Col. F. J. Fox.
D1. Francis Bernard Niall Fox, of Wellington, N.Z., * 1936.
D2. Claire Fox, * & + 1931.
D3. Cara Fox, * & + 1933.
D4. Margaret Fox, * & + 1933.
C12. Agnes Dorothy Mary Petre, * 1901, +, Md. 1933, Frank Parris, + 1954.
D1. David Francis Parris, * 1936.
D2. Helen Mary Jean Parris, * 1934.
D3. Catherine Mary Parris, * 1935.
D4. Elinor Mary Parris, * 1939.
C13. Margaret Elizabeth Mary Petre, * 1905.
B2. Oswald Arthur Petre, * 1849, +, Md., Isabel Leach.
C1. Archibald Petre.
C2. Helen Petre.
C3. Mabel Petre, Md., George Austin.
D1. Oswald Austin.
D2. Helen Austin.
C4. Patricia Petre, Md., Ernesto de Fernandez Artiga.
D1. Isabel de Fernandez Artiga.
C5. Dorothy Petre.
B3. Sebastian Henry Petre, * 1856, + 1934, Md. 1881, Elise Sibeth, + 1946, d. of W. Edward Sibeth, of Rowney Abbey, Hertfordshire.
C1. Henry Aloysius Petre, Maj., D.S.O., M.C., * 1884, + 1962, Md. 1929, Kathleen Coad Detires, d. of Robert L. Detires, of Toronto, Canada.
C2. Edward Petre, * 1886, + 1912.
C3. William Petre, F/Cmdr., R.A.F., * 1888, + 1955, Md. 1925, Margaret Gwladys Bruce, + 1982, d. of Archibald Dacres Bruce, of Acton Burnell Park, Shropshire.
D1. Ann Mary Margaret Petre, of Cambridge, * 1926, Md. 1955, John Edward Turner Hales-Tooke, + 1992, s. of John Baseley Hales-Tooke, M.C., of Norwich.
E1. Jonathan Petre Turner Paul Hales-Tooke, * 1957, Md. 1994, Breda Flaherty.
F1. Ben William Flaherty Hales-Tooke, * 1999.
F2. Matthew James Hales-Tooke, * 2002.
E2. Hugh Benedict Milton Hales-Tooke, * 1959.
E3. Giles Anthony Raphael Hales-Tooke, * 1964.
D2. Mary Elise Petre, * 1929, Md. 1951, Leonard Norman Pardoe, s. of W. A. L. Pardoe, of Otterhampton, Somerset.
E1. Sebastian William Joseph Pardoe, * 1956, Md. 1980, Amanda Walley.
F1. Charles Edward Adam Pardoe, * 1990.
F2. (Harry) Harrison Sebastian Hunter Pardoe, * 1993.
E2. Matthew James Wentworth Pardoe, * 1960.
E3. Louise Mary Anne Pardoe, * 1952, hass issue.
F1. Claudia Louise Isobel Chapman, * 1993.
D3. Helen Elizabeth Petre, * 1939, + 1982, Md. 1963, Peter Gordon Halsted.
C4. Bernard Francis Petre, Capt., * 1891, + 1977, Md. 1926, Mary Lucy Sligo, of Oakley, Fife, d. of Archibald Dominic Smith Sligo.
D1. John Leslie Joseph Petre, * 1928, + 1929.
D2. Michael Henry Charles Petre, * 1930, Md. 1959 (div. 1980), Christian Margaret Lilias McIntyre, d. of John Franc Finch McIntyre.
E1. Liam John Joseph Petre, * & + 1959.
C5. John Joseph Petre, S/Cmdr., R.N.A.S., * 1894, + 1917 killed in action.
C6. Mary Josephine Lawrentia Petre, * 1882, + 1959.
C7. Sybil Mary Petre, * 1899, + 1929, Md. 1921, F/Lt. William Frederick R. Gough, s. of Frederick Gough, Issue.
B4. Robert George Petre, * 1861, + 1922, Md. 1892, Elizabeth Grace Ferguson, + 1937, d. of Robert Ferguson, of Southbridge, Canterbury, Kent.
C1. Robert John Petre, N.Z. Forces, * 1894, + 1915 killed in action.
C2. Francis William Petre, of Lower Hut, N.Z., * 1902, + 1993, Md.1) 1932 (div. 1944), Gertrude Fey Wright, d. of Philip Lowry Wright, of Bicton, Napier, N.Z.
D1. John Lowry Petre, * 1934, Md. 1962, Susan Helen Durrant, d. of Edwin Thomas Durrant, of Auckland, N.Z.
E1. Michael Petre, * 1964.
E2. Daniel Petre, * 1966, Md. 1995, Renelle Lea Bickerton.
F1. Harry Lewis Petre, * 2001.
F2. Alice Petre, * 1997.
F3. Juliet Petre, * 1999.
E3. Sally Petre, * 1963, Md. 1992, Philip Roger Shanks.
F1. Jack Shanks, * 1992.
F2. Lily Mac Shanks, * 1995.
Md.2) 1947, Athalie Millicent Eaton, d. of Albert Henry Eaton, of Raumati, N.Z.
D2. Robert Bruce Petre, * 1952.
D3. Ann Mary Elizabeth Petre, * 1948, Md. 1972, Robert Joseph Stella.
E1. Daniel John Stella, * 1976.
E2. Nicholas James Stella, * 1979.
E3. Lucy Jane Stella, * 1982.
D4. Eleanor Jane Petre, * 1954, Md. 1976, John Kane, of Wellington, N.Z.
E1. Alexander John Petre Kane, * 1985.
E2. Michael Petre Kane, * 1993.
E3. Eleanor Mary Petre Kane, * 1989.
E4. Juliet Athalie Petre Kane, * 1991.
C3. Sybil Mary Petre, Md. 1926, Vincent Aubrey Ward, C.B.E., * 1888, + 1946, s. of Sir Joseph George Ward, 1st Bt., of Wellington, N.Z.
C4. Elizabeth Bertha Petre, Md. 1942, Lloyd Kendall Wilson, s. of Charles Kendall Wilson.
B5. John Petre, * 1866, +.
B6. Lucy Agnes Petre, * 1846, + 1923, Md. 1871, Philip Wellesley Colley, of Mayfair, + 1926.
B7. Mary Julia Petre, * 1850, +, Md. 1873, Edward Carington Wright, of Kelvedon Hall, Essex.
C1. Beatrice Mary Wright, * 1874, +, Md. 1893, Sir Edgar Bernard, * 1866, +.
D1. Bernard Paul Frederick Bernard, * 1894.
D2. Evelyn Edith Mary Bernard, * 1895.
B8. Emma Mary Petre.
B9. Alice Mary Petre.
B10. Dorothy Mary Petre, * 1860, +, Md. 1881, Theodore Sibeth, s. of W. E. Sibeth, of Rowney Abbey.
C1. Edward Sibeth, * 1887.
C2. William Sibeth, * 1891.
C3. Bernard Sibeth, * 1898.
C4. David Sibeth, * 1902.
C5. Margaret Sibeth, a nun, * 1882.
C6. Mary Sibeth, * 1884.
C7. Eleanor Sibeth, * 1893.
B11. Mabel Mary Petre, * 1862, +, Md. 1891, Frank Chadwick.
B12. Sybil Mary Petre, a nun, * 1864, + 1937.
B13. Florence Mary Petre, * 1865, + 1956, Md. 1893, Surgn. Lt.Col. Charles Randolph Kilkelly, C.M.G., M.V.O., + 1953, s. of Surgn-Gen. Charles Edward Kilkelly.
C1. Edward Kilkelly, * 1895, + 1917 killed in action.
C2. Francis Kilkelly, * 1900, + 1944 killed as a result of air action while a P.O.W.