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Evelyn Hugh (St. David) Owen (c1880-1960), of the Automobile Transport Co, Twentieth Century Travel Co, Orleans Car Co, Owen Motor Co - also see Owen Cars and Motor Transport Co and perhaps Owen and Orleans.
Note: The Beaulieu Encyclopedia of the Automobile has concerns over whether E. H. Owen ever manufactured cars or was rather a fantasist 'in the Walter Mitty mould'.
c1880 Born in London the son of Joseph Pugh Owen, a university tutor, and his wife Marian (Mary Anne) Williams
1891 Living at 12 Portland Place, Fulham: Joseph P. Owen (age 44 born Llandeilo, Carmarthenshire, Wales), Tutor for University. With his wife Marian Owen (age 42 born Dublin) and their four children; Cecil V. M. Owen (age 17 born Paddington); Evelyn Owen (age 10 born London); Gladys Owen (age 8? born London); and Kathleen Owen (age 2 born London).
Image and details of an early motor tricycle.
1901 Living at 72, Comeragh Road, London, W: Joseph Owen (age 54 born Llandeilo, Carmarthenshire, Wales), Private Tutor for Univ. etc. With his wife Marian Owen (age 52 born Ireland) and their three children; Evelyn Owen (age 20 born Fulham), Clerk in Shipping; Gladys Owen (age 18 born Fulham); and Kathleen Owen (age 12 born Fulham).
1902 The Motor Transport Co of Comeragh Road produced a short-lived motorcycle.
1904 March. Letter. Concerns car bodies. of 72, Comeragh Road.
1904 May. Letter. Claims to be 'one of the few actual manufacturers of english motor cars'
1905 of 72 Comeragh Road, gained a patent on "improvements relating to internal combustion motors"
1906 Owen Petelectra car
1908 Evelyn Hugh Owen, of 1 Long Acre, engineer, gained a patent on "improvements in connection with the valves of internal combustion engines"
1909 Evelyn Hugh Owen, of 1 Long Acre, engineer, gained a patent on "improvements in steering apparatus for motor cars and other vehicles", and another on "improvements in or relating to motor vehicles"
1911 Living at 36 Barons Court Road, Fulham: Mary Anne Owen (age 61 born Dublin), Widow. With her three children; Evelyn Hugh Owen (age 30 born London), Journalist - Engineering; Gladys Mary Winifred Owen (age 28 born London), Clerk - Insurance; and Kathleen Theresa Owen (age 23 born London), Clerk - Insurance
1911 September. Letter about motor industry and includes 'the various motor companies under my control' 
1914 Patent 11,171. 'Process and means for improving the operation of internal combustion engines'
1921 Evelyn Hugh Owen, of 32 Queen Victoria St, gained a patent on "A working process in and means for the construction and operation of an internal combustion engine"
1922 US Patent. Internal combustion engine, of Comeragh Road. 
1960 Died in Bournemouth.