Hs 126 crash 12 May 1940

[Lucky Luke]

I am researching the crash of a Hs 126 at the village Mechelen-Bovelingen in Belgium. This crash is well documented with at least one photo published in various books and on the internet, among others in ‘The Battle of France Then and now’ but also on this website:
http://www.grootheers.be/html/vliegt...ens_wo_ii.html

The crew was reported Fw Hans Poller and Fw Wilhelm Meyer of 1.(H)/41 who both perished in the crash.

The Kracker database on Aircrewremember.com lists Poller as being buried at the large German cemetery at Lommel, Belgium, block 15, grave 338. I visited this cemetery e few weeks ago but found the grave of Johann Poller, not Hans Poller at this reference, although the date of his death fits with the date of 12 May 1940 for this crash. The rank is not quoted but is marked as Flg which I think is the abbreviation for Flieger, so either pilot or aircrew.

I still have some doubts as the first name is different. Where is the error: was it not Hans but Johann Poller who crashed on 12 May 1940 at Mechelen-Bovelingen, is the name on the grave wrong, has the crew member a double name Hans Johann Poller, or are we talking about two different persons, both died on 12 May 1940?

I would also like to know where the other crew member, Wilhelm Meyer, is buried. Logically, both crew members would have been buried together but maybe he was transferred later to his home town?

Any help in clearing this anomaly would be appreciated.

Best regards
Luc