+---Leonard Bruce Muir (19 NOV 1964-)
| | +---Otto Frederick Voigt
| +---Edna Elsie Ottellie Voigt 
(19 DEC 1913-30 MAR 1979)
| | +---Donald Scott
| +---Elsie Gertrude Scott (05 JUL 1886-06 MAY 1958)
| | +---James Warrick
| | +---William Warrick (03 DEC 1833-26 DEC 1917)
| | | +---Martha Hancock
| +---Mary Ann Manear Warrick (08 APR 1854-01 MAR 1934)
| | +---James Trethewy (ABT 1517-ABT 1573)
| | +---Thomas Trethewy (-ABT 1616)
| | +---Bartholomew Trethewy
| | +---Bartholomew Trethewy (-1666)
| | +---Bartholomew Trethewy
| | +---Thomas Trethewy (ABT 1675-MAY 1743)
| | | +---Jane Bruart
| | +---William Trethewy (ABT 1712-JAN 1777)
| | | | +---Phillip Mellow (ABT 1660-JAN 1711)
| | | +---Joan Mellow (ABT 1680-)
| | | +---Jane ?
| | +---Richard Trethewy (ABT 1753-MAR 1836)
| | | +---Grace Rickard
| | +---Thomas Trethewy (ABT 1797-)
| | | | +---John Cundy
| | | | +---Solomon Cundy (ABT 1690-DEC 1759)
| | | | +---William Cundy (ABT 1733-)
| | | | | | +---David Pearce
| | | | | | +---Isaack Pearce (ABT 1666-)
| | | | | | | +---Alice ?
| | | | | +---Alice Pearce (ABT 1698-NOV 1739)
| | | | | +---Alice ?
| | | +---Susanna Cundy (ABT 1761-)
| | | +---Jane Treneman (ABT 1737-ABT 1809)
| +---Jane Trethewy (ABT 1835-12 NOV 1925)
| +---Mary Maneer (ABT 1803-BEF 1871)
Thomas Ian Muir (29 JUN 1990-)
+---Helen Sara Lee-Porcher