Jan Reinås died in 2010.
The 'split reins' you are talking about are Western reins. 'Combined reins' are English. Both are good, just different riding styles.
Jan Steen died in 1679.
No Reins was created in 1986.
Jan Rychlík died in 1964.
Jan Rypka died in 1968.
Jan Sierada died in 1943.
Jan Simons died in 2006.
Jan Tille died in 1966.
Jan Konopka died in 1814.
Jan Stankievič died in 1976.
Jan Gebauer died in 1907.
Jan Ruhtenberg died in 1975.