Researching:
Mogilev - BERLIN;  BELIISKI;  HENKIN - GENKIN;  MESCENIKOV;  POZ - POZE
Ekaterinoslav - KATZ; LAPIDUS;  LAVROTIN - LAVRUTIN - AVRUTIN;  PESACHINSKY; SHIMERNITSKY - SEMERNITSKY;  STEINHART
Roumania:  DONNENFIELD;  DOLLINGER;  RINCOVER - HARINCOVER;  WISENTHAL - VIESENTAUL
Harbin, China:  FELDMAN;  PENZNER;  SREBERK - SCHRIEBER;
Lublin, Poland:  KATZ;  JARMUSZ

There is a main Dutch website wiewaswie.nl
but Amsterdam has also his own website for genealogy archive : htpps://archief.amsterdam.indexen
On this website I've found probably his father also Abraham Benjamin, son of Grietje Benjamin (maybe his father has already died) from Amsterdam, he first married  on 11 April 1793 (29 yrs old) Rebecka Gersam (22 yrs) from Munnickendam. They both lived at Marken. Rebecka has died soon, because Abraham Benjamin remarried 30 May 1806 Sara Joseph (32 yrs) from Amsterdam. Abraham lived then Batavierenstraat 22, Amsterdam, Sara livedin the Kerkestraat with her mother Beletje Isaac.
Another website with information https://www.uitdeoudekoektrommel.com/joodse-personen-in-nederland/ It is in Dutch, but with the possibility of Google Translate

Regards,
Lyn Bos

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