Traces of 313 Sqn and Arnost MRTVY

I am working on a project to bring back alive memories of WWII soldiers and airmen who fell and are burried in Belgium. As my partner is Czech, I started digging into W/O Arnost Mrtvy who died in Belgium on 19 April 1944 during a bomber escort mission above Mechelen (Malines in French).
A couple of days ago I had the occasion to visit the monument on the Olomouc cemetry of the Aeroclub of Olomouc where Mrtvy was mentioned. I equally visited the old Olomouc aeroclub installations with the Wagner hangars (apparently the oldest in Europe still in service), where he apparently began his flying carreer.
One of the missing pieces of the puzzle to trace Arnost's war time live, his last days and hours back would be to add more background on his log book: when did he join England, when and where did he join 313 RAF Sqn.
So basically, I am asking if you could help me find more details about W/O Arnost MRTVY, his log book, Operational Records Book of 313 Sqn or other previous Sqn he served in, his preflight briefing on 19 April 1944, his wingman, the mission and reports on the bomber mission he was escorting that day, etc.
If you would be able to provide me any more relevant information about Arnost Mrtvy or the 313 Czechoslovakian Sqn such as photographs, maps, links, or any other contacts you might have would be more then appreciated.
Hoping you could help me keeping some of the forgotten Czech heroes alive,

Kind regards