Dear oh dear, the old brain cells are being tested this morning.
We have this 2013 reference that ‘Doctor Miroslav Tyrs’ was a sport from ‘Gloire de Paris.
(‘Gloire de Paris’ was a synonym of ‘Anna de Diesbach’).
This is reinforced by the 1934 and 1936 references, which also say
‘Doctor Miroslav Tyrs’ is the same as ‘Souvenir de Jeanne Balandreau’.
However, the parentage for ‘Souvenir de Jeanne Balandreau’ is shown as - sport of ‘Ulrich Brunner Fils’.