Rowena is the great-grand-daughter of:
James Cross (b 1846 at Tingewick, died 1920 in Christchurch, New Zealand) and Zilpah or Diana Brockless (b 1849 at Waddesden, Buckinghamshire, d 1925 in Christchurch, New Zealand)
and 2g-gdau of
Richard Cross (b 1813, bp Mursley, d 1887 at Tingewick) and Susannah Richards (b abt 1812 at Mixbury, Oxfordshire, d 1891 at Tingewick)
and 3g-gdau of
Rebecca Cross
Richard Richards (1778 - 1856 of Mixbury, Oxfordshire) and Mary (b abt 1777, d 1865 at Tingewick)